Tail lights out, bulbs are new. - JeepForum.com
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post #1 of 5 Old 09-24-2017, 10:03 PM Thread Starter
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Tail lights out, bulbs are new.

2003 Jeep Grand Cherokee: I was told I had a tail light out and after replacing the bulb, the light still did not come on. I soon learned that the passenger side light and the top/middle light were both not working. All of the other lights work fine. The turn signals come on, but when I have the right turn signal on, it flashes faster than normal and only shows from the headlight. I assume it's a wiring problem, but I'm not sure where to start or how to fix it. Any suggestions? Anyone have this problem?

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post #2 of 5 Old 09-24-2017, 10:24 PM
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Would suggest you get a layout of the wiring for the circuit you seek to trouble shoot. Then use a continuity tester ( one with a bulb and a sharp point on it that you use to test segments of the wire loom) and test until you find the bad spot. That is assuming you have checked the fuses and none are blown. Once you find the "broken spot" you can splice in a new wire or just cut the harness there and add a new wire to the brake/tail light. Don't rule out a faulty ground. Good luck.
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post #3 of 5 Old 09-25-2017, 02:02 AM
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The sockets in the taillight housings are a very common failure point.
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post #4 of 5 Old 09-25-2017, 06:00 AM
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Sockets are the first place I'd start. Plenty of YouTube videos on how to fix. My problem was a little different(brake light not working when headlamps were on). A little tin foil on the contacts worked for me. Quick, cheap, and easy. Good luck!
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post #5 of 5 Old 09-25-2017, 06:37 AM
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Originally Posted by Topher11 View Post
The sockets in the taillight housings are a very common failure point.
had the same problem happen a week after I got my WJ and ended up just getting an aftermarket set of taillights and never had the problem again
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