This complete engine wiring harness is designed for PSA vehicles equipped with the 1.6 16V NFU engine. It provides all necessary connections between the engine sensors, actuators and the vehicle electrical system to ensure reliable operation of fuel injection, ignition and ancillary components. Technically accurate part numbers are commonly used as search terms, so the harness is often located by its OEM references listed below.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4 (2008); Fitment Examples: Peugeot 307 and other vehicles with 1.6 16V NFU engine
• Product Codes: 9663466280, 9663466380, 9684875780, 9684875680
• Other Numbers: 6564FG, 6569FG

Function and Application

The engine wiring harness routes power and signal circuits for the engine management system. Typical circuits include injector feeds, ignition coil connections, crankshaft and camshaft sensor circuits, throttle body and idle control, alternator and starter connections, temperature and pressure sensors, and the interface to the engine control unit. Correct routing and intact protective sleeving are essential to avoid short circuits and signal interference.

How The Part Is Replaced

Replacement should follow these general steps: disconnect the battery, remove surrounding components that obstruct access (airbox, intake ducts, battery tray as required), label and photograph connector locations, unclip harness fastenings and remove retaining clips, unplug all connectors and remove the harness from engine bay grommets. Install the new harness by reversing removal steps, ensuring grommets and seals are correctly positioned and all connectors are fully seated. Reconnect the battery and perform an electrical check.

Installation Recommendations

• Always Disconnect The Battery Before Starting Work To Prevent Short Circuits.
• Mark Or Photograph Each Connector To Avoid Misconnections During Reassembly.
• Replace Any Damaged Clips, Grommets Or Fasteners To Maintain Correct Routing And Vibration Protection.
• Use Dielectric Grease On Exposed Electrical Connectors If Working In Corrosive Environments.
• After Installation, Clear Any Stored Fault Codes And Verify Sensor Signals And Engine Operation With Diagnostic Equipment.

Why The Part Most Commonly Fails

Engine wiring harnesses typically fail due to heat ageing, oil and chemical contamination, mechanical chafing against sharp edges, rodent damage or water ingress at grommets and connectors. Symptoms include intermittent electrical faults, misfires, no-start or multiple engine management fault codes. Early diagnosis and replacement of a compromised harness prevent collateral damage to sensors and the engine control unit.

Recommended For

Suitable For Professional Garages And Experienced DIYers Working On Citroën And Peugeot Vehicles With The 1.6 16V NFU Engine. The harness is especially useful when matching OEM references are provided during parts lookup.

Restore reliable climate control with this complete mechanical air conditioning wiring harness designed for Citroën C4 first-generation vehicles. Ideal for professional workshops and experienced DIY mechanics, the harness supplies power and signal connectivity to the blower motor, mode/temperature actuators, control panel and compressor clutch (where applicable). Supplied with the OEM-related code 6445YW, this harness offers a direct-fit replacement to eliminate intermittent fan operation, non-responsive HVAC controls or wiring-related compressor engagement faults.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot OEM)
• Model: Citroën C4 (First Generation)
• Product Codes: 6445YW
• Additional Numbers: Cross-reference/Tag: Peugeot 307 (see product code 6445YW for compatibility checks)

Function And Application

The wiring harness routes power and signals between the HVAC control unit, blower motor, blend/recirculation/mode actuators, temperature sensors and the A/C compressor clutch relay. In mechanical climate systems the harness carries direct switch signals and supply feeds rather than complex CAN messages, so correct connector integrity and secure routing are critical for predictable operation.

How Replacement Is Performed

Typical replacement requires removal of lower dash panels or center console access panels to reach the HVAC control area. Steps generally include:

• Disconnect Battery Before Work.
• Remove Trim/Panels Blocking Access To The HVAC Control Assembly And Connector Plugs.
• Carefully Unplug All Connectors From The Control Panel, Actuators And Blower Motor.
• Release Harness Clips And Fasteners, Remove The Old Harness And Install New Harness In The Same Routing.
• Reconnect All Plugs, Secure Harness With Clips/Zip Ties As Required And Reassemble Panels.
• Reconnect Battery And Verify All HVAC Functions (Fan Speeds, Mode Selection, Temperature Control, Compressor Engagement).

Installation Recommendations

• Always Disconnect The Battery Before Starting Work To Prevent Short Circuits Or Accidental Airbag Deployment.
• Follow The Vehicle Manufacturer’s Disassembly Sequence To Avoid Damage To Trim And Fasteners.
• Inspect Connectors And Pins For Corrosion Or Bending; Clean Or Replace Damaged Terminals Before Reinstallation.
• Route The Harness Along Original Clips And Grommets To Prevent Chafing; Use Protective Loom Tape In High-Wear Areas.
• After Installation, Test All HVAC Functions And Confirm Compressor Clutch Engagement Under Engine Running Conditions.

Why This Part Most Commonly Fails

• Connector Corrosion From Moisture Ingress Causing Intermittent Contacts.
• Mechanical Damage Or Abrasion From Improper Routing, Dash Components, Or Prior Repairs.
• Heat And Vibration Leading To Wire Insulation Degradation Or Broken Conductors.
• Rodent Damage To Wiring Looms (Chewing) In Vehicles Left Stationary For Long Periods.
• Poor Electrical Connections Causing Overheating At Pins And Subsequent Melting Or Failure.

Notes For Professionals

This harness is intended as a direct replacement for vehicles using the 6445YW wiring configuration. Always verify part code fitment against the vehicle’s parts list when planning repairs. Suitable for workshop use and competent DIY mechanics familiar with dashboard disassembly and electrical diagnostics.

Product Overview

This used wiring harness is designed for the passenger seat of the Peugeot 307 CC and includes the seat heating control circuit. It is an ideal replacement part for workshops and DIY mechanics looking to restore seat heating functionality or repair damaged seat wiring. Customers often search by part numbers such as 441334800 or 6509Q2, so these identifiers are included for easier findability.

Key Benefits

• Direct fit for Peugeot 307 CC passenger seat applications.
• Restores seat heating control and electrical connectivity to seat-mounted components.
• Reduces diagnostic time compared with tracing individual wires—swap the harness and retest.
• Useful spare for collision repair, seat replacement, or resolving intermittent heating faults.

Compatibility

Primary Fitment: Peugeot 307 CC. Please check the product codes below when searching for exact matches: technicians commonly search using 441334800 or 6509Q2.

Technical Information

• Manufacturer: Stellantis (Peugeot/Citroën)
• Model: Peugeot 307 CC
• Product Codes: 441334800, 6509Q2
• Additional Numbers: NFP

Function

The harness routes power and control signals between the vehicle electrical system and the passenger seat components, specifically providing the circuit for the seat heating control. Proper connectivity ensures reliable function of the heating element and any associated switches integrated into the seat.

Most Common Failure Reasons

There is no fixed replacement interval for seat wiring harnesses. Failures typically occur due to mechanical wear and environmental factors over time. The most common causes are:

• Mechanical fatigue from repeated seat adjustment and movement, leading to broken or frayed conductors.
• Connector corrosion or poor contacts caused by moisture ingress.
• Damage during seat removal/installation or following collision repairs.
• Localized overheating from short circuits or poor connections affecting the heater circuit.

Installation Recommendations

Follow these general steps to replace the passenger seat wiring harness. Always refer to vehicle manufacturer repair procedures for model-specific details.

• Disconnect the vehicle battery before starting work to prevent short circuits and to avoid accidental airbag deployment.
• Remove the passenger seat from the vehicle if required to access the harness routing and connectors.
• Note or photograph connector positions and clips before disassembly to ensure correct reinstallation.
• Carefully disconnect all seat connectors and unclip the old harness from mounting points and trim retainers.
• Route the replacement harness following the original path, secure all clips, and reconnect connectors firmly.
• Reinstall the seat, reconnect the battery, and verify seat heating operation and any related electrical functions.

Notes for Technicians

When troubleshooting intermittent heating faults, check connector integrity and continuity of the harness before replacing other components. Replacing the harness often resolves faults caused by broken wires in flex areas or corroded pins. Because this is a used part, inspect connectors and insulation for damage prior to installation.

Search Tags

441334800, 6509Q2, Peugeot 307 CC, Passenger Seat Wiring Harness, Seat Heater Harness

This wiring harness is designed for the Driver’s Seat of the Peugeot 307 CC and carries the electrical connections for the seat heating function. Frequently searched by part numbers 441334200 and 6509Q0, this harness restores the electrical path between the seat heating elements and the vehicle wiring loom, ensuring reliable operation of the heating circuit and related connectors.

Technical Information

• Manufacturer: Stellantis / Peugeot
• Model: Peugeot 307 CC (2003–2008)
• Product Codes: 441334200, 6509Q0
• Other Numbers: NFP

Installation Recommendation

Before starting work, disconnect the vehicle battery to avoid short circuits and to protect seat occupancy/airbag systems. Remove the driver’s seat following manufacturer procedures to access the harness routing. Note connector positions and routing clips, then carefully unplug electrical connectors. Replace the harness, secure all clips and grommets along the original routing to prevent chafing, reconnect the plugs ensuring full engagement, refit the seat, and reconnect the battery. After installation, verify seat heating operation and scan for any related fault codes.

Why This Part Fails Most Often

• Mechanical stress from repeated seat movement leading to wire chafing or broken conductors.
• Corrosion or contamination of connector pins due to moisture ingress.
• Damage during seat removal/reinstallation when clips or locking tabs are forced or not released correctly.
• Electrical faults in seat heating elements or short circuits that can overload and damage the harness.

Practical Tips for Mechanics and DIY

• Search using part numbers 441334200 and 6509Q0 to find matching listings and replacement harnesses quickly.
• Inspect connector pins and apply dielectric grease to reduce future corrosion where appropriate.
• Check fuses, relays and seat heating elements when diagnosing to avoid repeated replacements.
• Secure the harness away from sharp edges and moving mechanisms to prolong service life.

Product Overview

This negative battery cable is designed for e-HDi engines equipped with Start-Stop systems in Citroën and Peugeot models. Supplied to match original equipment fitment, it replaces worn or damaged negative polarity connections that can cause poor starting, charging faults or erratic behavior of Start-Stop functions. Commonly searched under part numbers 9676811480 and 5638NK, this cable is intended for professional mechanics and experienced DIY technicians performing electrical and battery system repairs.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4; Citroën C4 Picasso; Peugeot 308
• Product Codes: 9676811480
• Additional Numbers: 5638NK

Fitment And Compatibility

Designed specifically for vehicles with e-HDi diesel engines that use Start-Stop functionality. Fitment is common on Citroën C4, Citroën C4 Picasso and Peugeot 308 variants that carry the referenced OE numbers. Always verify the part number (9676811480 / 5638NK) against the vehicle’s existing cable before ordering to ensure correct routing and terminal type.

Function And Typical Failure Modes

The negative battery cable provides the return path for electrical current from the vehicle’s systems to the battery negative terminal and chassis ground. In Start-Stop equipped cars it must cope with frequent engine restarts and stable grounding for battery management and control modules. The most common causes of failure are terminal corrosion, mechanical wear or cracks in the conductor insulation, loosening of terminal clamps, and increased contact resistance leading to overheating. Symptoms of a failing cable include slow cranking, dashboard electrical faults, Start-Stop malfunction warnings and irregular charging indications.

Replacement Procedure

Safety And Basic Steps:

• Always Disconnect The Battery Before Work. Disconnect The Negative Terminal First And Reconnect It Last To Prevent Short Circuits.
• Locate And Remove Any Protective Covers Or Cable Clips To Access The Cable Route.
• Unscrew Or Unclip The Negative Terminal From The Battery And From The Chassis/Starter/Grounding Point As Required.
• Inspect Mating Surfaces For Corrosion, Clean With Appropriate Contact Cleaner Or A Wire Brush, And Replace Any Damaged Fasteners.
• Fit The New Cable Following The Original Routing, Secure All Clips, And Tighten Terminals To Manufacturer Recommendations.

Installation Recommendations

• Use Proper Tools And Protective Equipment. Avoid Contact Between The Positive Terminal And Ground When The Battery Is Connected.
• Ensure All Connection Surfaces Are Clean And Free Of Corrosion To Minimize Contact Resistance.
• Secure The Cable Along Its Original Path To Prevent Chafing And Mechanical Fatigue Caused By Engine Movement Or Vibration.
• If The Vehicle Has Sensitive Electronics Or Battery Management, Consider Performing A System Check After Replacement To Confirm Charging And Start-Stop Functions Operate Correctly.
• When In Doubt, Have The Replacement Performed Or Verified By A Qualified Technician.

Why This Part Fails Most Often

Negative battery cables fail primarily due to environmental corrosion at terminals, mechanical damage from engine bay movement or contact with sharp edges, and gradual degradation of the conductor or insulation. High resistance connections caused by poor contact accelerate heat build-up and can lead to intermittent electrical faults. Start-Stop systems increase duty cycles on the battery and grounding points, which can expose marginal connections and hasten failure.

Notes For Mechanics And DIY Technicians

This item is typically identified and ordered by OE number 9676811480 or by cross-reference 5638NK. When replacing, confirm terminal types and cable routing match the original to avoid electrical issues. Proper installation restores reliable grounding and contributes to correct charging, starting and Start-Stop operation.

Product Description

This battery negative/ground cable is designed for the Start-Stop capacitor on e-HDi engines. It provides the negative return path between the capacitor and the vehicle electrical system, ensuring reliable high-current transfer during frequent engine stop-start cycles. The part is an OEM-style replacement carrying the original references used on Citroën and Peugeot vehicles with e-HDi technology.

Key Benefits

• Direct fit for specified Citroën and Peugeot models—keeps Start-Stop system functioning reliably.
• Durable construction to withstand vibration, heat and frequent current pulses from Start-Stop operation.
• Restores proper grounding and reduces voltage drop during engine cranking, improving starter and capacitor performance.

Fitment / Compatible Models

Commonly fitted to vehicles with e-HDi engines, including:

• Citroën C4 II
• Citroën C4 Picasso
• Peugeot 308

Installation Recommendations

Intended for professional fitters and experienced DIYers. Typical replacement procedure:

• Safety First: Disconnect the battery negative terminal before any work to avoid short circuits or damage to electronic modules.
• Locate The Cable: Access the Start-Stop capacitor and follow the negative lead path to the battery or ground point—remove any covers as required.
• Remove Old Cable: Loosen and remove terminal bolts/clamps. Inspect connectors and surrounding wiring for corrosion or damage.
• Prepare Connection Points: Clean mating surfaces and remove oxidation. Replace corroded clamps or fasteners if necessary.
• Fit New Cable: Route the new cable avoiding sharp edges and hot components. Secure clamps and fasteners; apply dielectric grease to terminals to slow future corrosion.
• Restore Power: Reconnect the battery and verify Start-Stop system behavior and charging system operation. Clear any related fault codes if present.

Why This Part Fails

The most common causes of failure are:

• Corrosion at terminals and clamps caused by moisture and road salts, increasing resistance and heat.
• Thermal Degradation: Proximity to exhaust or engine heat can harden insulation and expose conductors.
• Mechanical Wear: Vibration and chafing can break strands or damage terminations over time.
• Increased Load From Start-Stop Cycles: Frequent high-current pulses accelerate connector and conductor wear compared with conventional systems.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4 II; Citroën C4 Picasso; Peugeot 308
• Product Codes: 9674241880; 5638PJ
• Additional Numbers: NFP

Practical Tips

• Always replace corroded clamps or fasteners rather than reusing them—good mechanical connection is essential.
• Secure routing to avoid heat and abrasion; use original clips or equivalent fasteners to prevent movement.
• After replacement, check for charging voltage stability and confirm the Start-Stop system engages and disengages correctly.

Recommended Professional Advice

If you are unsure about access, routing or fault codes related to Start-Stop operation, have the replacement performed by a technician with experience in PSA electrical systems to ensure correct installation and long-term reliability.

This Start-Stop main wiring harness (part number 9677185380) is an OEM-fit electrical supply cable designed for e-HDi Start-Stop systems used across Citroën, Peugeot and DS models. Ideal for professional garages and experienced DIYers, the harness restores reliable energy transfer between the Start-Stop capacitor and the vehicle electrical system, helping to maintain correct stop/start function and battery support during engine off phases. Many customers search directly by the OE number 9677185380 — including this reference in the description improves findability in search engines and workshop catalogues.

Technical Information

• Manufacturer: Stellantis (Citroén/Peugeot)
• Model: Citroën C4 II, Citroën C4 Picasso, DS4, Peugeot 3008 I, Peugeot 308, Peugeot 5008 I
• Product Codes: 9677185380
• Other Numbers: No Additional Numbers Available

Function

The harness carries high-current pulses and control signals between the Start-Stop capacitor (energy storage element) and the vehicle electrical network. It ensures fast recharge and discharge cycles required by the e-HDi system, supports engine stop/start sequences, and transmits sensor/power information to the control electronics. Correct wiring integrity is critical for reliable Start-Stop operation and for avoiding fault codes or limp mode.

Compatibility And Fitment

Fits selected Citroën, Peugeot and DS models equipped with e-HDi Start-Stop systems. Confirm model fitment by the OE number 9677185380 and by visual comparison of connector shapes and mounting points. Typical applications include Citroën C4 II, Citroën C4 Picasso, DS4, Peugeot 3008 I, Peugeot 308 and Peugeot 5008 I.

Installation Recommendations

• Disconnect The Battery Before Starting Work And Follow Manufacturer Procedures To Avoid Damage To Electrical Components.
• Locate The Start-Stop Capacitor And Trace Existing Harness Routing. Replace Using The Same Clips And Fastening Points To Prevent Chafing.
• Check Connectors For Corrosion Or Damaged Pins; Clean Or Replace If Necessary Before Reassembly.
• Secure The Harness Away From Hot Surfaces, Exhaust Components And Moving Parts To Prevent Early Wear.
• After Installation, Perform A Start-Stop System Check And Clear Any Stored Fault Codes With Diagnostic Equipment.

Why The Part Most Often Fails

• Mechanical Damage From Chafing, Improper Routing Or Accidental Impact During Repairs.
• Heat Degradation Due To Proximity To Exhaust Components Or Engine Heat Over Time.
• Corrosion Of Connectors From Moisture Ingress Or Road Salt, Leading To Intermittent Contact.
• Vibration And Fatigue Causing Broken Wires Or Compromised Insulation.
• Previous Poor Repairs Or Splices That Introduce Resistance And Unreliability.

Replacement Advice

When replacing the harness, always inspect related components (capacitor, fuses, grounding points and connector housings). Replace damaged clips and grommets to maintain correct routing. For professional repairs, verify system functionality with appropriate diagnostic tools and check that Start-Stop behavior returns to normal under road and idle conditions.

Product Overview

This genuine-style driver seat wiring harness is designed for the front left seat of the Citroën C4 B7 (C4 II). Supplied under code 6505G0, the harness restores electrical connectivity for seat functions and sensors after damage or wear. Built for professional garages and competent DIYers, this harness helps recover seat adjustment, switch inputs and the vehicle’s seat-related electrical circuits to original routing and connector standards.

Benefits And Applications

Ideal for mechanics and home repair enthusiasts who need a reliable replacement harness that fits directly into the original routing. Common search keywords include seat wiring harness, driver seat loom, seat cable harness, Citroën C4 wiring 6505G0 — making this part easy to find when searching by part number or vehicle model.

How The Part Works

The seat harness provides the electrical pathway between the vehicle wiring loom and the seat’s components: switches, motors, heating elements and seat sensors as fitted by the manufacturer. It keeps connectors secured and wires protected from abrasion and pinch points caused by seat movement.

Installation Recommendations

• Always Disconnect The Battery Before Starting Work To Prevent Short Circuits And Airbag System Faults.
• Remove The Seat Following Manufacturer Procedures: unbolt seat rails, tilt and lift carefully to access harness connectors.
• Label Or Photograph Connectors Before Disconnecting To Ensure Correct Reassembly.
• Route The New Harness Along Original Clips And Channels To Avoid Pinch Points; Replace Any Broken Clips.
• After Installation, Reconnect The Battery And Test All Seat Functions: adjustment motors, switches, heating (if present) and seat occupancy/belt buckle sensors where applicable.
• Use Dielectric Grease On Multi-Pin Connectors If Corrosion Is Present, And Secure Any Loose Sections With Cable Ties At Factory Points.

Why The Part Most Commonly Fails

Driver seat harnesses typically fail from repeated flexing where the harness passes between the seat and floor, causing internal wire breakage. Additional common causes include connector corrosion from moisture, damaged insulation from sharp edges or previous improper repairs, and mechanical damage from seat removal/installation. Symptoms include intermittent seat movement, non-functional switches, faulty heating operation, or airbag/seatbelt sensor fault codes.

Technical Information

• Manufacturer: Stellantis (Citroën)
• Model: Citroën C4 B7 (C4 II)
• Product Codes: 6505G0
• Additional Numbers: Not Provided

Compatibility And Fitment

Designed specifically for the front driver seat on Citroën C4 B7 vehicles. The part number 6505G0 is commonly used to locate the correct harness for these models. Verify visual match with the existing harness and connector types during replacement to ensure correct fitment.

Notes For Professionals

When replacing seat harnesses in workshop conditions, inspect seat frame mounting points and any nearby wiring for signs of abrasion. If fault codes related to seat sensors or airbags appear after replacement, perform a full diagnostic and clear codes following the manufacturer’s procedure.

This replacement wiring harness is designed for the front passenger seat of Citroën C4 II (B7) vehicles and is commonly searched by part number 6505H3. It routes power and signal connections between the seat and the vehicle body loom, ensuring correct operation of electric seat adjustment motors, heating elements, buckle switches and occupancy/airbag sensors where fitted. The harness is aimed at professional technicians and experienced DIYers who need a direct-fit solution when the original loom is damaged or intermittent.

Key Features

• Direct replacement for the front passenger seat wiring harness on Citroën C4 II (B7).
• Commonly referenced by product code 6505H3 for quick lookup.
• Routes power and signal lines for seat motors, heaters, buckle switches and occupancy/airbag related connections when applicable.
• Designed to restore reliable electrical contact and prevent shorts caused by chafed wires or damaged connectors.

Technical Information

• Manufacturer: Stellantis (Citroën)
• Model: Citroën C4 II (B7)
• Product Codes: 6505H3
• Other Numbers: Not Specified

Installation Recommendations

1. Always disconnect the vehicle battery before beginning work to avoid risk to airbags and electrical systems.
2. Remove seat trim and bolts to access the wiring harness; keep all fasteners and clips for reinstallation.
3. Carefully unplug all seat connectors and label them if necessary to ensure correct reconnection.
4. Route the new harness following the original cable runs and secure with the factory clips to prevent chafing.
5. After installation, reconnect the battery and perform a diagnostic scan to clear any stored faults and verify airbag/occupancy sensor status if fitted.
6. Recommended For: Professional technicians or experienced DIYers. If airbag or occupancy sensor faults persist after replacement, use a PSA-compatible diagnostic tool to perform any required initialization or calibration.

Most Common Failure Causes

• Mechanical wear and repeated seat movement causing wires to fatigue at pivot points.
• Chafing against seat frames or sharp edges that eventually expose conductors and cause intermittent faults or short circuits.
• Connector corrosion from moisture ingress or contamination, leading to poor contact.
• Damage from accidental impact or improper seat removal/installation.
• Electrical overloads from adjacent faults or modifications to seat systems.

Notes For Buyers

Customers frequently search using the part number 6505H3; verifying this code against the vehicle parts list will help confirm fitment. There is no fixed service interval for seat wiring harnesses — failures typically occur after several years or high mileage due to mechanical stress and environmental exposure. When replacing the harness, ensure correct routing and secure fastening to prevent premature re-failure.

This battery negative/ground engine harness is an OE‑style replacement designed for Citroën and Peugeot applications. It secures the negative pole of the battery to the engine block and chassis ground, ensuring reliable return paths for starter, alternator and vehicle electronics. Supplied under part numbers 9676811780 / 9802871580 / 5638PN, this harness is commonly used on smaller petrol and diesel engines and is a direct-fit option where the original cable assembly has failed, corroded or been damaged by heat and mechanical wear.

Key Benefits

• Direct replacement for OE harnesses with matching routing and connector interfaces.
• Restores Good Grounding And Electrical Stability For Starting And Charging Systems.
• Compatible With Vehicles Equipped With 1.4 16V, 1.4 HDi And 1.4 VTi Engine Variants (See Compatibility).
• Allows Optional Fitment Of Battery Charge State Unit (6500KT) If Required.

Function

The harness provides the main negative connection between the battery, engine block and vehicle chassis. A solid, low‑resistance ground is essential for starter motor performance, alternator charging regulation and stable operation of all onboard electronics. The assembly typically includes lug terminals, insulated cable sections and attachment points designed to match factory routing.

Compatibility / Typical Applications

Fits Various Citroën And Peugeot Models Including, But Not Limited To, Citroën C4 II And Other Small‑Platform Vehicles Equipped With 1.4‑L Engines (1.4 16V, 1.4 HDi, 1.4 VTi). Searchable By OE Numbers: 9676811780, 9802871580, 5638PN.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Compatible With Multiple Citroën And Peugeot Models (See Compatibility Section)
• Product Codes: 9676811780, 9802871580, 5638PN
• Additional Numbers: 6500KT (Battery Charge State Unit – Sold Separately)

Installation Recommendations

• Always Disconnect The Battery Before Starting Work To Avoid Short Circuits And Damage.
• Follow Factory Routing And Secure All Clips And Fasteners To Prevent Chafing And Heat Exposure.
• Clean The Grounding Points To Bare Metal Before Reattaching The Lug; Ensure Good Mechanical Contact.
• Tighten Terminals According To Manufacturer Specifications And Protect Exposed Connections From Corrosion.
• If The Vehicle Uses A Battery Charge State Unit, Install The Unit (6500KT) Where Applicable And Ensure Connectors Are Correctly Seated.
• After Installation, Check Starter Crank Behavior And Charging Voltage To Confirm Proper Operation.

Why The Part Fails

Most Failures Are Caused By Corrosion At Terminals, Mechanical Damage Or Heat Exposure. Road Salt, Moisture And Battery Acid Can Accelerate Deterioration Of The Cable Ends And Lugs. Repeated Current Loads And Vibration May Cause Fractures Or Loss Of Contact, Leading To Hard Starts, Intermittent Electrical Faults Or Irregular Charging.

Signs You Need Replacement

• Difficult Engine Cranking Or Slow Starter Response.
• Intermittent Electrical Faults, Flickering Lights Or Erratic Sensors.
• Visible Corrosion, Melted Insulation Or Loose Terminals On The Negative Pole.
• Voltage Drop Under Load When Tested With Multimeter.

Fitment Notes

Part Numbers Are Common Search Terms For Mechanics And DIY Enthusiasts: 9676811780, 9802871580, 5638PN. Verify Physical Match With The Existing Harness (Connector Shapes, Lengths And Attachment Points) Before Final Installation. Do Not Use If Any Connector Or Insulation Appears Compromised.

Warranty And Quality

This Harness Is Supplied As A Replacement Component Intended To Restore Proper Grounding And Electrical Function. It Is Manufactured To Fit Factory Specifications For The Listed Part Numbers. For Long‑Term Reliability, Ensure Proper Installation And Protection Against Corrosion.