Brake lights not working - JeepForum.com

 
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post #1 of 3 Old 03-27-2013, 05:56 AM Thread Starter
linusb
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1994 YJ Wrangler 
 
Join Date: Aug 2009
Location: Lexington,SC
Posts: 1,838
Brake lights not working

I pulled out a bunch of old wiring from PO that was a tangled mess. My brake lights no longer working. Where is the switch for the brake lights? I must have cut off the power feed somehow.


1994 YJ Wrangler, 4.0, AX15, NP231, 35x12.50x15 BFG KM2s, 4" RC lift, 1" lift Boom Shackles, 1" BL, 4.10 gears, 8.8 LSD in rear and D30 Aussie Locker in front, on-board air conversion, Ramsey RE8000 winch.
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post #2 of 3 Old 03-27-2013, 07:55 AM
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit
Posts: 21,727
Haven't seen you here for a while! How are thngs going? Look at this thread:
http://www.jeepforum.com/forum/f12/n...ng-o-k-655012/
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post #3 of 3 Old 03-27-2013, 08:30 PM Thread Starter
linusb
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1994 YJ Wrangler 
 
Join Date: Aug 2009
Location: Lexington,SC
Posts: 1,838
Hey! Well, I got it working. I probed around on the switch side of the connector applying a ground to each of the four prongs to see if somehow a ground would complete circuit to lights but that was a no go.

I am perplexed as to why there are 4 wires at the connector and to the switch.

I probed the harness side of the connector by applying 12v to random pins and seeing if i would get brake lights. Voila, i found the output line.

Next i supplied power to each of the remaining prongs on the switch side of the connector and tested for continuity at the output upon pressing brake pedal. In doing so I found what should be the 12v feed wire.

There is a red and blue wire that goes to the connector that presumably should be hot that wasn't. Without time to troubleshoot why it once was but now isn't hot, I cut the wire and spliced in a random hot one that I found unused under dash. Brake lights work.

I'm troubled that I don't know why the correct wire isn't supplying 12 volts but I guess I shouldn't quibble. I'll probably rewire a fresh feed over weekend to a known source.

I don't think my reverse lights are working either. I guess that switch is on the transmission.

I took some pics that I'll post up in a day or two.

1994 YJ Wrangler, 4.0, AX15, NP231, 35x12.50x15 BFG KM2s, 4" RC lift, 1" lift Boom Shackles, 1" BL, 4.10 gears, 8.8 LSD in rear and D30 Aussie Locker in front, on-board air conversion, Ramsey RE8000 winch.
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