Description
Right-hand DVD and multimedia harness for Citroën C4 Picasso first generation.
This right-hand DVD and multimedia harness is a direct-fit replacement designed for Citroën C4 Picasso (first generation) multimedia systems. It restores reliable power, audio and data connections between the vehicle wiring and the OEM DVD/multimedia unit, helping to eliminate common faults such as loss of audio, intermittent operation or no power to the unit. Supplied under OEM references 9658551980 and 6574C5, this harness is suitable for professional workshops and experienced DIY mechanics who require a precise fit and straightforward installation.
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C4 Picasso (First Generation)
- Product Codes: 9658551980, 6574C5
- Other Numbers: NFP
Function And Fitment
The harness connects the right-hand side of the DVD/multimedia unit to the vehicle’s power, ground, speaker outputs and data lines. It carries supply voltage, audio signals and the required control/data connections for the head unit to communicate with the car’s systems. The part is produced to match factory connector types and routing for the Citroën C4 Picasso first generation, ensuring correct mechanical and electrical fit.
Replacement Procedure
- Always disconnect the battery before starting any work to avoid short circuits and to protect vehicle electronics.
- Remove the right-hand dash or trim panels following the vehicle manufacturer’s procedure to access the multimedia unit.
- Unscrew and extract the multimedia/DVD unit enough to access the rear connectors.
- Carefully unplug the old harness connectors, releasing any locking tabs or retaining clips. Note routing and fixing points.
- Install the new harness by routing it along the original path, secure with clips or ties, and engage all connectors fully until locks click.
- Reconnect the battery and test all multimedia functions (power on, CD/DVD read, audio channels, display, steering wheel controls if applicable) before final reassembly.
Recommended Workshop Tips
- Inspect connector pins for corrosion or bent pins and clean or replace damaged terminals before fitting the new harness.
- Use dielectric grease on connector pins to reduce future corrosion in moisture-prone areas.
- Secure routing away from sharp edges, moving parts and heat sources to prevent chafing or thermal damage.
- Test the unit’s functions before reassembling trim to save time if further adjustments are needed.
Why This Part Commonly Fails
- Moisture Ingress And Corrosion: Water penetration or condensation can corrode pins and connectors, causing intermittent or permanent loss of function.
- Mechanical Damage: Chafing, crushed wires or broken locking tabs from improper routing or accidental impact.
- Previous Improper Repairs: Poor splices, non-factory connectors or incorrect soldering can create unreliable connections.
- Electrical Faults: Short circuits or overheating in nearby circuits can melt insulation or connectors.
- Age And Wear: Over many years vibration and temperature cycles can fatigue wires and connectors, especially at stress points.
Symptoms Indicating Replacement Is Needed
- No power to the DVD/multimedia unit or intermittent power loss.
- Partial or no audio from one or more channels.
- Intermittent faults, such as the unit rebooting, or loss of communication with other systems.
- Visible damage to connector housings, pins or wiring insulation.
For workshops and competent DIYers this harness offers a cost-effective way to restore multimedia functionality with minimal modification — use the OEM product codes 9658551980 and 6574C5 to confirm correct part selection for Citroën C4 Picasso first generation applications.
