rear right tail light short - Page 2 -
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post #16 of 18 Old 07-07-2009, 10:56 AM
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1999 WJ 
Join Date: Nov 2008
Location: BC
Posts: 42
Originally Posted by garbs View Post
Strange, my girlfriends '99 WJ has something similar going on i have not been able to figure out. It's her right rear light, works great till you turn on the headlights, then the running lights/turn still work fine but when you hit the brake the whole light goes out. I do not have a trailer wireing setup on her's either. It's got me stumped, i changed out all the bulbs and it didnt fix it either... Maybe it's just a 1999 WJ thing curious to see if you can fix yours.
This is exactly what happened to me. I discovered that one of the prongs on the light socket was broken off inside; not visible. I noticed it by wiggling the prongs; one was loose. Changed the socket and everything was fine. I suspect this is your problem. Get a new socket and it should cure it (or switch the socket from the good side to verify it is the socket).

Two wheels or four wheels, it's only fun.
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post #17 of 18 Old 07-07-2009, 11:07 AM
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2006 LJ Wrangler 
Join Date: Feb 2009
Location: Bozeman Montana
Posts: 839
good deal. will check this when I get home tomorrow. I assumed someone on here had a similar issue
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post #18 of 18 Old 06-23-2010, 10:38 PM
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2000 XJ Cherokee 
Join Date: Oct 2008
Location: NY
Posts: 21
I found this while searching this thread from a member:I'm just posting this bc I asked some time ago and nobody knew what the issue was. I found this so this is not my work. I thought my light didn't work when I turned on the car but it was really just when my lights were on(of course the worst time). Found this on another forum and saved a good deal of money. This may have already been posted but just wanted to make sure. Seems to be a very common issue.

Jeff | Jan 27, 2007 | Reply
First, I want to say thank you for the info, you saved me money and aggravation. Second it took mea little while to figure out what contact I was looking for. So I would like to provide a little more detail to make it easier for others in the future.
This is the corrective method for your brake lights not working when your headlights are on(2000 Jeep Cherokee Larado).
1) The cause of the problem is heat from the bulb.
2) Remove the light assembly as if you were going to change a bulb.
3) Turn the socket and remove it from the taillight assembly and set it aside(check to be sure your bulb is not burnt out).
4) Look at the opening, you will see 3 flat chrome colored contacts on the assembly.
5) Notice the one by it self at the top of the opening, that is the “ground”.
6) If you look closely you will notice the plastic around the ground contact has shrunk a little bit, this caused the contact to pull away from the socket, causing the problem.
7) With a small flat head screwdriver, VERY GENTLY pry up the contact so it stays slightly upward by itself.
8) Re-insert the bulb assembly back into the housing and press your brake petal with your lights on.
9) You should be in good to go!
10) Tools: Phillips head screwdriver and a small flat head screwdriver.
11) Time : 5 minutes per light
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