Description
DVD and Multimedia Player Harness For Citroën C4 Picasso First Generation
This original-style wiring harness is intended for the DVD and multimedia player used in the first-generation Citroën C4 Picasso. It replaces worn or damaged cabling that connects the head unit to power, speakers, antenna and vehicle interfaces, restoring reliable audio/video and control functions. Ideal for professional workshops and experienced DIY mechanics searching by part number (9656743980 / 6574C3).
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot OE)
- Model: Citroën C4 Picasso (First Generation)
- Product Codes: 9656743980, 6574C3
- Other Numbers: NFP; tags: 6574C3 | 9656743980
Function And Features
The harness provides the electrical and signal connections between the DVD/multimedia head unit and the vehicle. Typical circuits carried by this loom include power and ground, speaker outputs, antenna feed, illumination and accessory ignition supply, plus signal/communication lines required by the multimedia system. Using the correct harness ensures stable audio/video playback, steering wheel control response and proper integration with the vehicle’s electrical system.
Compatibility
Designed for the first-generation Citroën C4 Picasso multimedia/DVD head units. Buyers commonly search by OE numbers 9656743980 and 6574C3 — including these numbers in your search will help locate the correct part quickly. Confirm that the multimedia unit in the vehicle matches the connector layout before installation.
Replacement And Installation
General replacement steps (for experienced technicians):
- Park vehicle on a level surface and ensure ignition is off.
- Disconnect the negative battery terminal before starting work to avoid short circuits or damage to electronic modules.
- Remove dashboard trim and the head unit according to the vehicle service manual to access connectors and the harness routing.
- Unplug all connectors from the head unit and follow the harness to its vehicle-side connectors; release any retaining clips or cable ties.
- Install the new harness by routing it along the original path, secure with clips/ties and reconnect all plugs. Ensure connectors are fully engaged and locking tabs are closed.
- Reconnect the battery, power up the system and verify all functions: audio, DVD playback, radio reception, steering wheel controls and any displays.
Installation Recommendations
- Always disconnect the battery before removal/installation to protect sensitive electronics.
- Use the vehicle’s original clips and harness routing to avoid chafing or pinching that can cause future failures.
- Inspect connectors for bent pins, corrosion or melted plastic and replace damaged plugs rather than forcing a connection.
- Check related fuses and the antenna connection during troubleshooting to rule out secondary causes of audio issues.
- After installation, perform a full functional test of the multimedia system and associated controls.
Why This Part Fails Most Often
- Connector Corrosion: Moisture ingress at connector interfaces can cause intermittent contacts and signal loss.
- Mechanical Damage: Cable chafing, pinched wires behind trim panels or damage from previous repairs/accidents.
- Heat And Aging: Long-term exposure to engine bay heat or interior temperature fluctuations can embrittle insulation and break conductors.
- Poor Installation: Incorrect routing or unsecured harnesses lead to fatigue and eventual wire fracture.
- Rodent Damage: In some regions, rodents chew wiring looms, causing sudden faults.
Choosing the correct harness by OE number (9656743980 / 6574C3) and following careful installation practices will restore reliable multimedia operation in the Citroën C4 Picasso first generation. Suitable for professional mechanics and competent DIYers who perform electrical repairs.
