This harness plays a crucial role in maintaining a stable and safe electrical flow, ensuring reliable engine start-up and overall vehicle operation. Over time, exposure to heat, vibration, and engine bay contaminants may lead to wear or damage of the harness, resulting in electrical faults or vehicle performance issues. Replacing the harness is a straightforward process that can be performed by experienced car mechanics or knowledgeable DIY enthusiasts, involving disconnecting the old cable bundle and securing the new harness in place, ensuring all connectors are firmly attached.

Technical Information

Manufacturer: Citroën, Peugeot
Model: Suitable for Citroën C4 and compatible vehicles
Product Codes: 9649923380
Additional Numbers: Not available

This part is categorized under Electrical Components, Cable Harnesses, and Engine Harnesses, specifically intended for vehicles with 1.6 HDI diesel engines. Its robust construction guarantees durability and performance, making it a reliable choice for maintaining your vehicle’s electrical integrity.

Installing this harness ensures safe and consistent current flow to the engine components, preventing unexpected vehicle downtime and reducing repair costs. Whether you are a professional mechanic or a self-repair enthusiast, investing in this original equipment compatible harness will restore your vehicle’s electrical system to optimal condition.

Reliable main positive cable harness (part number 6589CC) designed for PSA Group petrol and diesel 1.4–1.6 engines. Ideal for professional workshops and experienced DIY mechanics who need a direct replacement harness to restore proper power distribution in the engine bay. The harness routes high‑current supply from the battery positive terminal to the vehicle’s engine compartment power distribution points and BPGA connection, ensuring correct starting and charging system function.

Function And Application

The positive battery harness transmits the main positive feed from the battery to the engine compartment distribution, starter and charging circuits. It contains heavy‑gauge conductors, robust terminals and protective sleeving to withstand heat, vibration and engine bay contaminants. Proper operation of this harness is essential for reliable engine start, stable voltage supply and protection of downstream electrical components.

Fitment / Compatible Models

• Citroën C4
• Citroën C4 II
• Citroën C4 Picasso
• Peugeot 307
• Peugeot 308
• Engines: 1.6 e‑HDI 68 kW, 1.4 16V, 1.4 VTi, 1.6 VTi

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Engine Positive Cable Harness
• Product Codes: 6589CC
• Additional Numbers: Not Provided

Installation Recommendations

Always follow safe workshop practice. Disconnect the battery before starting work to avoid short circuits and damage. Remove any covers or battery trays necessary to access mounting points. Label connectors and routing before removal to ensure correct refit. Secure the new harness with original clips and routing away from exhaust components and moving parts. Tighten terminals to the manufacturer’s recommended torque and ensure all crimps and connections are clean and corrosion‑free. After installation, verify charging voltage and starter function before reassembling trim.

Common Failure Reasons

Typical causes of harness failure include terminal corrosion (especially at battery connections), heat damage from nearby exhaust components, mechanical chafing from improper routing, vibration‑induced wire breakage, acid corrosion from leaking batteries and damage from previous poor repairs. Over time protective sleeving and insulation can degrade, increasing electrical resistance and risk of intermittent faults.

Replacement Procedure (General Steps)

1. Park vehicle on level surface, engage parking brake and remove ignition key.
2. Disconnect the battery negative terminal (and battery positive if required by the vehicle procedure).
3. Remove battery and any obstructing covers to access harness routing and mounting points.
4. Document or mark connector positions, then release clips and remove the old harness.
5. Fit the new harness following original routing; secure all clips and fasteners.
6. Clean battery terminals and reattach connections, tightening to manufacturer torque.
7. Reinstall battery, reconnect, start engine and check charging system and starter operation.

Why This Part

Part 6589CC is a direct replacement designed to restore safe, low‑resistance power delivery in affected Citroën and Peugeot models. Purchasing the correct positive harness reduces risk of electrical faults, starting problems and charging issues—critical for both workshop efficiency and vehicle reliability.