1989 XJS #5 10 amp fuse blows when brake pedal is touched.

Thanks

 

Rick,

I've moved your question from General Tech Help to XJS forum. Members here with the same model will be able to help.

Graham

 

Thanks, the newbee

 

Which fuse are you talking about and where is it located?

What happens when that fuse blows?

 

Orangeblossem,
Fuse block under the driver side dash,When I tap the brake pedal, I can here the pop of the 10 amp ATC fuse.

Thanks foe the help.

 

You have a dead short in the circuit between the brake light switch and the brake lamps. Nothing for it but to follow the wiring diagram and find it. A quick start might get you lucky: if you disconnect one side at a time (in the boot behind each lamp unit follow the wire until you find the loom connector) and see if, when one or the other is disconnected the fuse does not blow. This narrows the search down to the lamp unit itself and the wiring to it.


Greg

 

Thanks Greg, I will give it a shot. I will let you know.

Thanks Rick.

 

1989 xjs.
Found yellow and blue wires pinched between steering column mount, right above pedal.
If you have this model you might want to take a look. Had to be done at factory.

Rick.

 

Congrats!

I missed this thread before, but I also had to solve a stop lamp short problem a few weeks ago. Here is a couple of hacks I came up with to facilitate short hunting:

1. If you are blowing fuses, and need to repeatedly test the circuit, you can find automotive circuit breakers that automatically reset. I temporarily swapped out a breaker for the fuse, which allowed me to repeatedly test the brake light circuit without wasting fuses.
   
   
2. Find a 12 volt buzzer from an electronics supply, and clip that to the terminals of one of the rear lamps. This allows you to hear the break lights working, and detect when the breaker cuts out the circuit. Very handy for solo break light/turn signal testing.