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Mar 2, 2026
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Hi I’m rebuilding the front end of a 2018 Seat Leon Cupra and I’ve got to the point of connecting the Drivers Assist Radar Module but the issue I have is the the 8 pin connector has been ripped off and not with the car. I have a replacement 8 pin connector and a wire with seven different coloured wires. Where can I find a wiring diagram for what colour wire goes to which numbered pin.
 
Hi I’m rebuilding the front end of a 2018 Seat Leon Cupra and I’ve got to the point of connecting the Drivers Assist Radar Module but the issue I have is the the 8 pin connector has been ripped off and not with the car. I have a replacement 8 pin connector and a wire with seven different coloured wires. Where can I find a wiring diagram for what colour wire goes to which numbered pin.

Pin 1: Brown (Earth)
Pin 2: Orange/Gray (CAN high - goes to engine cmpt. wiring harness, then pin 12 of the 17-pin white connector on left A-pillar, then main wiring harness)
Pin 3: Orange/Brown (CAN low - goes to engine cmpt. wiring harness, then pin 13 of the 17-pin white connector on left A-pillar, then main wiring harness)
Pin 5: Orange/White (CAN high - goes to pin 9 of the 17-pin brown connector on left A-pillar, then pin 2 of the 12-pin connector of the driver assist camera
Pin 6: Orange/Brown (CAN low - goes to pin 11 of the 17-pin brown connector on left A-pillar, then pin 1 of the 12-pin connector of the driver assist camera
Pin 8: Black/Green (10A fuse at SC32)

It should be noted that the wiring diagram shows two orange/brown wires, maybe because they are both shown as CAN low but I find that curious anyway.

I recommend you to compare actual wire colors in your car, because sometimes they might be different than what the diagram shows.