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Old 09-02-2012, 06:15 PM   #1
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LED bulbs

I just replaced my tail lights with LED bulbs, and they work fine, But when I turn the head lights on they won't work. The turn signal indicators on the dash both light up and stay on. I have a 92 YJ. Any ideas on what could be the problem?

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Old 09-02-2012, 06:25 PM   #2
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Originally Posted by dfd39
I just replaced my tail lights with LED bulbs, and they work fine, But when I turn the head lights on they won't work. The turn signal indicators on the dash both light up and stay on. I have a 92 YJ. Any ideas on what could be the problem?
This is just a guess but I spent days tracing taillight gremlins on a cj7 who's taillights turned off everytime I turned on the headlights. It turned out to b the rear taillights were not grounded correctly.

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Old 09-02-2012, 08:49 PM   #3
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Yes I do...

basically, and simply, the Jeep was not designed to run with LED lights.

The old blinker systems ran on a current draw design, a piece of metal would heat up and break the circuit, then cool and reconnect. Viola, blinking lights; where your new LED lights cannot draw enough current to make that flasher work.

Easy fix, go buy a blinker designed for LED signals. But be warned, they are kind of expensive; although you probably realized that when you bought the LED lamps in the first place.

As for turning your lights on and the LED lights dont, I would think there is a wiring issue then. Bad ground like was offered, or some other wiring gremlin causing that issue.
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Old 09-02-2012, 10:11 PM   #4
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Originally Posted by camarozz View Post
Yes I do...

basically, and simply, the Jeep was not designed to run with LED lights.

The old blinker systems ran on a current draw design, a piece of metal would heat up and break the circuit, then cool and reconnect. Viola, blinking lights; where your new LED lights cannot draw enough current to make that flasher work.

Easy fix, go buy a blinker designed for LED signals. But be warned, they are kind of expensive; although you probably realized that when you bought the LED lamps in the first place.

As for turning your lights on and the LED lights dont, I would think there is a wiring issue then. Bad ground like was offered, or some other wiring gremlin causing that issue.
This is spot on.
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Old 09-03-2012, 02:00 AM   #5
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thanks i'll take a look at the grounds come morning, i already replaced the flashers but this didn't help
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