The seat belt warning system in my 1989 Jaguar XJS convertible is not working properly. I have not located the white and pink wire with the two pin wiring harness from the seatbelt warning system to the passenger's seat belt latch. Did some of the cars only have the warning system on the driver's side? It looks like the weight sensor in the car seats were not installed or are not connected. The seatbelt warning alarm activates when the ignition is on and onone is sitting in the driver's seat. The only way to turn off the alarm when the driver is not in the seat is to insert the belt into the buckle. Does anyone have drawings of the wiring in the seats for the lumbar support, heated seat, weight sensor in the seat and the seat belt warning system?

 

If you google 1989 jaguar xjs elecrical pdf, it will pull up The jagrepair.com pdf and supplement for the 1989 which you can download. Pages 49-50 is the seat.