This BEHR digital air conditioning wiring harness is a direct-fit replacement designed for Peugeot 307 models produced up to 2004. Intended for professional workshops and competent DIYers, the harness restores reliable electrical connections between the climate control unit and the vehicle’s actuators, sensors and compressor control circuits. The part is often searched for under product codes D5384 and 6445ZV, making it easy to find in catalogs and online listings.

Key Benefits

Reliable Electrical Connections: Restores secure plug-and-play connections for digital climate control to ensure proper operation of temperature regulation and airflow functions.

Time-Saving Replacement: Direct-fit design reduces diagnostic and installation time compared with repairing multiple broken wires or corroded connectors.

Workshop-Friendly: Supplied as a complete harness for straightforward installation by mechanics and experienced DIYers familiar with Peugeot 307 dashboard disassembly.

Technical Information

Manufacturer: BEHR

Model: Peugeot 307 (models up to 2004)

Product Codes: D5384, 6445ZV, NFP

Other Numbers: 6445ZV, D5384

Function And Application

The wiring harness links the digital climate control unit to blower motor circuits, blend/recirculation actuators, temperature and ambient sensors and the air conditioning compressor signal. It transmits command signals and power, ensuring coordinated control of cabin temperature, fan speed and vent positions. Proper harness function is essential for fault-free climate system behavior and to avoid false error codes from the control unit.

Installation Recommendations

• Disconnect The Battery: Always isolate the vehicle battery before starting work to avoid short circuits and protect electronic modules.
• Access The Harness: Remove the necessary dash trim pieces, glovebox or center console panels to reach the climate control unit and harness routing paths.
• Label Connectors: Mark connectors and take photos before disconnecting to ensure correct reassembly.
• Unplug And Replace: Carefully release connector locks, remove the old harness and fit the replacement harness routing it along the original clips and grommets.
• Secure And Protect: Use existing clips and cable ties; ensure no wires are pinched, exposed to sharp edges or routed close to heat sources like the heater core.
• Electrical Check: Reconnect the battery and verify operation of climate functions (blower speeds, vent positions, temperature control) and check for stored fault codes with a diagnostic tool if available.
• Recommended Tools: Trim removal tools, basic socket/driver set, multimeter for continuity checks and a small selection of cable ties.

Common Failure Causes

Harness failures are usually due to mechanical or environmental damage rather than intrinsic electronic faults. Frequent causes include:

• Connector Corrosion: Moisture ingress and oxidation at connector pins cause intermittent contacts or open circuits.
• Insulation Degradation: Heat exposure from the heater core or engine bay side can make insulation brittle, leading to exposed conductors and shorts.
• Chafing And Abrasion: Routing without adequate protection may result in wires wearing through on sharp edges or moving components.
• Rodent Damage: Chewing can sever or expose wiring in vehicles parked for long periods.
• Poor Previous Repairs: Inadequate splices or non-sealed repairs often fail under vibration and temperature cycles.

This harness is a practical replacement for restoring full climate control functionality on Peugeot 307 vehicles up to 2004. When ordering, search by product codes D5384 or 6445ZV to locate the correct item quickly.

This high-quality air conditioning wiring harness is designed for Peugeot 307 models and supplies power and signal connections between the climate control panel, blower motor, actuators (blend/recirculation/flap motors), temperature sensors and the A/C compressor clutch. Ideal for professional workshops and experienced DIY mechanics, the harness is referenced under product code 6445YX (internal code D5384) and matches the original layout for easy replacement. Installing the correct harness restores reliable HVAC operation, fixes intermittent fan/blend door faults and prevents shorts that can affect heater and A/C performance.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Peugeot 307 (from 2005)
• Product Codes: 6445YX
• Other Numbers: D5384

Compatibility and Fitment

Fits Peugeot 307 models from 2005 onwards. Typically used on vehicles equipped with the digital climate control module and related HVAC actuators. Verify the connector shapes and routing during installation to ensure proper fitment with hatchback and estate (SW) body styles where applicable.

Function and Benefits

The wiring harness transmits power and control signals for blower speed, flap/door actuators, temperature sensors and the compressor clutch. Replacing a damaged harness restores correct HVAC responses, eliminates intermittent faults, and prevents electrical shorts. Using the correct harness reduces diagnostic time and ensures reliable climate control operation.

Installation

• Disconnect the negative battery terminal before starting work.
• Remove necessary interior trim panels and the glovebox to access the HVAC unit and connector routes.
• Label connectors if needed, then unplug the old harness from the climate control unit, blower motor and actuators.
• Carefully route the new harness following the original clips and channels; avoid sharp edges and heat sources.
• Check and clean connector pins; apply dielectric grease to prevent corrosion if appropriate.
• Reconnect all plugs, secure the harness with original clips or suitable replacements, reconnect the battery and test all HVAC functions (fan speeds, temperature control, flap movements, A/C engagement) before reassembling trim.

Recommended Tools and Tips

• Basic hand tools (screwdrivers, trim tools, pliers).
• Multimeter for continuity and voltage checks.
• Dielectric grease and quality cable ties or replacement clips to secure the harness.
• Work in a dry, well-lit area and take photos of connector positions before disconnecting to simplify reassembly.

Why This Part Fails

Common failure causes include mechanical wear, chafing against bodywork, moisture ingress and connector corrosion, rodent damage, or insulation deterioration due to heat and age. Symptoms of a failing harness are intermittent blower operation, inoperative flap actuators, blown fuses, or complete loss of climate control functions. Replacing the harness typically resolves electrical faults originating in damaged wiring or unreliable connectors.

Mounting Recommendations

• Always disconnect the battery before removal and follow manufacturer procedures to avoid damage to electronic components.
• Ensure correct routing and secure all mounting clips to prevent future chafing or rubbing.
• Inspect related components (blower motor, actuator gears, fuses) while the harness is accessible; damaged components can shorten harness life.
• After installation, verify full operation of the climate system through all modes and fan speeds before final reassembly.