Part description

This used front fog and sensor wiring harness is intended for Citroën vehicles and is an important part of the vehicle’s electrical installation. It ensures the connection of the front fog lights and parking sensors, so it is essential for the proper functioning of these elements and for the reliable transmission of the electrical signal.

The part is searched mainly by the designation 9663255080 and 6575Y2, which facilitates identification when repairing or replacing the original damaged volume. It is especially suitable for mechanics and DIYers who are looking for an original used car part for repair without unnecessary modifications.

Technical information

• Manufacturer: Stellantis Citroën Peugeot
• Model: Citroën C4 Picasso, Citroën Grand C4 Picasso first series
• Other numbers: 9663255080, 6575Y2, NFP

Product codes

• Product codes: 9663255080, 6575Y2
• Model names: Citroën C4 PICASSO, PEUGEOT 3008 I

Installation recommendations

Generally/typically for this type of electrical part, the exact replacement procedure may vary depending on the specific car design and access to the harness. It is important to handle the harnesses carefully to avoid damaging the connectors, insulation or fasteners.

1) Before assembly

• Check that the new and original harness match in shape, length, branching and connector types.
• Inspect the used part for cracked insulation, broken wires, oxidized pins or damaged handles.
• Compare the product numbers on the original and the replacement part.
• Disconnect the vehicle battery before starting work.

2) Necessary tools and materials

• A common set of hand tools
• Plastic levers for removing covers and linings
• Torch or work light
• Cleaning agent for electrical contacts
• Straps or original fasteners if applicable
• Protective gloves

3) Step-by-step assembly procedure

1. Disconnect the battery and secure the vehicle against unwanted movement.
2. Access the original harness wiring by removing covers or parts that prevent access.
3. Carefully document the original bundle routing, ideally with photos prior to disassembly.
4. Disconnect all connectors of the original harness without using excessive force.
5. Release the bundle from the holders, clamps and guides so as not to damage the surrounding parts.
6. Compare the dismantled bundle with the replacement piece, especially the branching, length and termination.
7. Place the replacement bundle in the original route, taking care not to twist or strain it.
8. Sequentially connect the individual connectors to the corresponding counterparts.
9. Secure the bundle in the original mounts and ensure safe routing away from edges, moving and heat-stressed parts.
10. Check that no wire is pinched under the cover or other part.
11. Reinstall all removed covers and access elements.
12. Connect the battery and prepare the vehicle for function check.
• 4) Post-assembly checks and function verification
  • Check the correct operation of the front fog lamps.
  • Check the reaction of the parking sensors.
  • Make sure that there is no loss of function when the wiring is moved after installation.
  • After a short test drive, visually check the fastening of the harness again.

  5) The most common assembly mistakes + how to avoid them

  • Swapping connectors – mark or take a picture of everything before disconnecting.
  • Damage to the connector latches – disconnect the connectors carefully and without prying with an inappropriate tool.
  • Pinching of wiring when mounting covers – always check the entire wiring route before final assembly.
  • Omitted oxidation of the contacts – before connecting, it is advisable to visually check the contacts and, if necessary, clean them.

  Reasons why the part is damaged

  • Long-term exposure to moisture and dirt in the cabling area
  • Mechanical damage to insulation or wires during previous repair
  • Vibration and friction of the bundle against surrounding parts
  • Damage to connectors, latches or pins during disassembly
  • Corrosion of electrical contacts and subsequent deterioration of conductivity
  • Local overheating or short circuit in part of the electrical installation
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