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Unread 02-14-2012, 07:06 PM   #1
My83andMe
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1983 CJ7 
 
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brake lights went out

Hey everyone, maybe you can help me figure this one out. My brake lights won't light up when I put pressure on the peddle though when I turn on the running lights the bulbs and wiring are good. This is a new one for me and I can't seem to track it down. Thanks guys... if you can help out on this you'll really be saving my rear end.

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Unread 02-14-2012, 07:17 PM   #2
teh603
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Switch gone bad on you?
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Unread 02-14-2012, 07:29 PM   #3
My83andMe
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Not exactly sure. I tried to poke my head around the peddle but with the steering, wires, etc. in the way I can't tell. What would it take, once I am able to find it, to get it out and check?
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Unread 02-14-2012, 07:37 PM   #4
only in a jeep cj
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Running lights are on a different circuit then the tail and turn lights. They use the second filament in the bulb. Do your turn signals work? If so, I would look into the switch as well. Without disconnecting anything, there is a two wire lead with a plastic plug coming off the switch wire about 4 inches from it. Red wires, one solid one with marker. Jump this plug to bypass the switch and test the rest of the wiring, etc. Let us know from there.
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Unread 02-14-2012, 07:55 PM   #5
My83andMe
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Will do. Unfortunately its looking like I'm going to have to take out my drivers seat. It take some awkward bending and I still can't get a clear look at it. How exactly do I jump the connection once I get to that point?
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Unread 02-14-2012, 08:49 PM   #6
only in a jeep cj
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Just slide seat all the way back and with right shoulder on the floorboard, look up and follow the brake pedal all the way up to the pivot, the switch will be off to the side a bit. The test plug will be hanging a few inches over. A small scrap wire will make a jumper just to see if the brake lights come on.

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1975 CJ-6 304 T15 Dana20 30/44 3.73
1983 CJ-8 258 T5 300 30/44 3.31 Looking for full or half hardtop buy or trade
1986 CJ-7 Laredo 4.6 stroker T5 300 30/44 3.31
1986 TJ-7 Trail Jeep project in the works
2003 Inca Gold TJ Rubicon
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Unread 02-14-2012, 11:32 PM   #7
BagusJeep
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Also check your fuses, you should have a 20 Amp STOP fuse.

It is on the same circuit as the Hazard flasher and clock (if fitted). There are other fuses for the Turn signals and park and tail lamps.
84-86fuseboxsch.jpg  
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Unread 02-14-2012, 11:56 PM   #8
Coiz
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For visual reference, this is where to find the brake light switch on the pedal assembly.
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Unread 02-16-2012, 01:40 PM   #9
My83andMe
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Hey all-star I appreciate all the quick replies. I got it apart and tried both jumping it and plugging in a new switch and still no change. Frustration is starting to set in all over again
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Unread 02-16-2012, 01:52 PM   #10
csabens
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Did you check the fuses? If so and all is well...

Another option for testing (with a test light) is to remove some of the wire loom running down the driver side and locate the hot wire for the brake lights, i think it's red, i can't remember off the top of my head though. Jump the wires again under the dash, and ground your test light and move up and down the wire to see where you go dark. Start up front and move to the back.
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Unread 02-16-2012, 01:54 PM   #11
My83andMe
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Alright! Got it. Just had to trace it to a worn wire. Thanks again everyone.
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