Description
Complete front driver’s seat harness for Peugeot 407 vehicles. Version with relay.
This replacement seat wiring harness is designed for professional workshops and experienced DIYers who need a reliable, OEM-style solution for restoring full electrical functionality to the driver’s front seat. The harness routes power and signals to the seat’s electrical components and includes a relay configuration for systems that require switched power. Popularly searched by part number 9649424580, this item is ideal when the original wiring has been damaged by wear, corrosion or after interior repairs.
Key Features
- Direct fit for Peugeot 407 applications where part number 9649424580 is specified.
- Relayed version for stable power supply to high-current seat functions.
- Designed to replace worn, damaged or intermittent wiring to restore seat adjustment, heating and switch functions.
- Quality connectors and routing points to match factory installation and mounting clips.
Technical Information
- Manufacturer: Peugeot (Stellantis)
- Model: Peugeot 407
- Product Codes: 9649424580
- Additional Numbers: NFP
Compatibility
Intended For: Peugeot 407 (various body styles and equipment levels). Ensure the vehicle’s seat wiring part number matches 9649424580 before ordering. This harness is for the front driver’s seat and the relayed version suits vehicles with factory relay-controlled seat circuits.
How To Replace
- Safety First: Always disconnect the negative battery terminal before any work on seat electrics to avoid short circuits and accidental airbag deployment.
- Remove The Seat: Slide the seat to its furthest positions, unbolt mounting points and carefully lift the seat clear of the floor. Keep clear access to seat connectors and retaining clips.
- Detach Interior Trim: Remove the necessary trim panels to access the seat base and connector positions.
- Unplug And Remove: Unplug all connectors from the old harness, release any retaining clips and remove the harness routing and relay(s).
- Install New Harness: Route the new harness following factory paths, secure with original clips or new ones if required, and reconnect all plugs securely.
- Reassemble And Test: Refit trims and seat, reconnect the battery, then verify all seat functions (adjustment motors, switches, heating if fitted and any linked systems) before completing the job.
Installation Recommendations
Work Should Be Performed By Qualified Personnel Or Experienced Technicians. Use Proper Tools To Avoid Damaging Connectors. Replace Any Broken Clips Or Fasteners To Prevent Chafing. After Fitting, Check All Seat Positions And Electrical Functions Through Several Full Cycles To Ensure Reliable Operation.
Reason For Failure
Seat wiring harnesses commonly fail due to repeated mechanical movement that causes wire fatigue at flex points, abrasion against seat frames, corrosion from moisture ingress, accidental damage during seat removal or after collisions. Over time, insulation wear or connector corrosion can create intermittent faults, loss of heating, inoperative seat motors or malfunctioning switches. Replacing the entire harness often resolves multiple simultaneous electrical faults.
Notes
This harness is supplied as a replacement wiring assembly for vehicles specifying part number 9649424580. Verify part number match on the original harness before installation to ensure correct fitment and functionality.
