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post #1 of (permalink) Old 09-13-2005, 11:46 AM Thread Starter
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Brake lights stay on...

A couple weeks ago I installed an brake booster from an XJ. When I first noticed that they stayed on is when I pulled my brake lines off my MC. I figured it had to deal w/ the proportioning valve where my brake wires go to. So, brakes are back up and running, but my lights stay on. I bled them, re-bled them but they won't go off. Any help? It's getting annoying pulling my battery lead off when I park.

There appears to be no shorts, no brake fluid puddles causing a short, etc.

And for me being a sparky, it's pretty humiliating. [img]/ubbthreads/images/graemlins/wall.gif[/img]

Thanks...
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post #2 of (permalink) Old 09-13-2005, 12:20 PM
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Re: Brake lights stay on...

The proportioning valve has nothing to do with the brake lights....assuming you mean the rear brake lights. The only thing electrical about the proportioning valve is the warning light. If one side fails, it causes a large differential to be created in the prop valve which pushes a piston one way or the other and lights up the "Brake" warning light on your dash.

You brake light switch is on the bracket that holds the brake pedel and stearing column. There is a clip that holds in in position, but you can move it in and out. Just reach up there and move it until the 'button' makes contact with the brake pedel arm.


This is what the whole mess looks like when pulled out. (mine does not look like this any more...all cleaned and painted).
See the little tab in front of the brake pedel that has a hole in it? That is where the brake light switch goes.
post #3 of (permalink) Old 09-13-2005, 12:21 PM
 
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Re: Brake lights stay on...

Is this on a CJ?
I can give some ideas like the switch on the brake pedal needs to be pushed in but if it's not a CJ then it would be pointless.
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post #4 of (permalink) Old 09-13-2005, 01:27 PM
 
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Re: Brake lights stay on...

If you used the little pivot mounted brake lite switch that the XJ had, that is probably the problem.. They're a real pain. It's a little micro switch that relies on the clearence of the nylon bushing to work..I'd just throw it away and mount a standard switch and bracket.
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post #5 of (permalink) Old 09-13-2005, 02:11 PM
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Re: Brake lights stay on...

This post on the AJC-BBS may answer the part # question. Most of our Jeepsters and Commandos have a master cyl. mounted switch. They leak, they malfunction, they un hook themselves...so many of us are going to the peddle mounted switch (like there is in MOST vehicles).
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post #6 of (permalink) Old 09-14-2005, 12:36 PM Thread Starter
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Re: Brake lights stay on...

Thanks everyone...got'r fixed. I never thought that the mechanism would line up different since all I did was bolt on the booster and not interchange anything else. But, I just needed to slide the switch forward about a quarter of an inch and walla! It's the stupid problems that cause the most brain damage I think...

Thanks again!
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post #7 of (permalink) Old 09-14-2005, 05:17 PM
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Re: Brake lights stay on...

To quote someone.....

[ QUOTE ]
We learn by our mistakes...Thats why we are all so smart.


[/ QUOTE ]
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