1987 Jaguar XJSC Break Lights
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1987 Jaguar XJSC Break Lights
I have a 1987 Jaguar XJSC on which the brake lights do not work. There is a plug in the trunk on the left side that has feeds which according to the mannual are the brake lights but there is nothing plugged into it. it has seven round contacts, 6 female and one male I have a picture that I could E-Mail. At first we thought that is was the tail light bulb failure sensor but upon some more research that only has 3 flat contacts on it and that is there. Does anybody know what this may have been for, if it had somthing plugged into it it isn't there anymore. The only thing I can think of is it may be for a trailer plug but it looks factory. Any help would be appreciated!
Thank you!
Thank you!
Veteran Member
Joined: Oct 2008
Posts: 1,930
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From: San Jose, CA, USA
@Bfin
The brake light switch on the brake pedal is known to cause issues on some XJSes. Have you done a continuity test and confirmed you are getting a good ground when the switch is closed when you press the brake pedal ?
Also I'm assuming you have checked the fuse and all is ok ? And the bulbs ?
Not sure if your car is a US or EUR spec car..... do you have the high level brake light on the trunk lid ? I had a short in here after I removed it and refitted it to my car after its re-paint, so every time I pressed the brake pedal it blew the fuse.
Agree your multi plug does sound like a trailer hook up...... don't even know if it was possible to fit a towbar to an XJS...... never seen one with it
The brake light switch on the brake pedal is known to cause issues on some XJSes. Have you done a continuity test and confirmed you are getting a good ground when the switch is closed when you press the brake pedal ?
Also I'm assuming you have checked the fuse and all is ok ? And the bulbs ?
Not sure if your car is a US or EUR spec car..... do you have the high level brake light on the trunk lid ? I had a short in here after I removed it and refitted it to my car after its re-paint, so every time I pressed the brake pedal it blew the fuse.
Agree your multi plug does sound like a trailer hook up...... don't even know if it was possible to fit a towbar to an XJS...... never seen one with it
Junior Member
Joined: Jan 2011
Posts: 20
Likes: 3
From: Georgia
I was going to post this as a new thread, but saw this was related.
Just recently had a brake light problem that was odd. Checked for power at the brake light switch with the load side wire off, had 12V to ground- so started chasing the wires on back towards the rear.
After wasting an hour, went back to the switch.
It would show 12V with the load side brake light wire off, but when connected, 0 volts. The contacts were just good enough to make no load.
Funny because those two bulbs do not pull much in the way of amps.
Ordered a new switch.
Hope this helps.
Just recently had a brake light problem that was odd. Checked for power at the brake light switch with the load side wire off, had 12V to ground- so started chasing the wires on back towards the rear.
After wasting an hour, went back to the switch.
It would show 12V with the load side brake light wire off, but when connected, 0 volts. The contacts were just good enough to make no load.
Funny because those two bulbs do not pull much in the way of amps.
Ordered a new switch.
Hope this helps.
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