86 XJS V12 Power Window Failure
Got a bit of a dellima on my hands. Windows worked fine when I parked the car outside to let it air out and now they wont go up and I'm not sure where to start looking. I've seen a thermal breaker in several wiring diagrams but cannot find it on the car. Any help would be greatly appreciated.
Agreed on the switches....common problem. A bit odd both failing at once, though.
The thermal breaker is probably on the RH component panel, below/behind the glove box. About 1.25" square, had brown and brown/blue wires. The window relay nearby as I recall.....the brown/blue wires goes to it
Cheers
DD
The thermal breaker is probably on the RH component panel, below/behind the glove box. About 1.25" square, had brown and brown/blue wires. The window relay nearby as I recall.....the brown/blue wires goes to it
Cheers
DD
Do the relay mod - this fixes the widow switch issue for ever.
Just remember to swap the supply and ground wires on the switch as the windows have 12V on BOTH sides of the motor and switch one side to ground to move a window.
Let me know and I post a cct diagram if you are interested.
Just remember to swap the supply and ground wires on the switch as the windows have 12V on BOTH sides of the motor and switch one side to ground to move a window.
Let me know and I post a cct diagram if you are interested.
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99xk8guy
XK8 / XKR ( X100 )
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Sep 29, 2025 10:51 PM
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