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Old 02-01-2013, 10:32 PM   #1
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88 yj tail lights

88 yj trying to replace tail lights and having trouble with wiring it seemed straight forward but when i hook up harness no lights come one but when i test the jeep harness it has power. Any help would be great thanks

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Old 02-03-2013, 09:41 AM   #2
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Sounds like you don't have a ground. The factory lights were grounded through the mounting bolts.

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Old 02-05-2013, 10:13 AM   #3
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That's exactly what it was bud thanks but now everything works but the brakes I'm thinking brake light switch under pedal?
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Old 02-05-2013, 10:26 AM   #4
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Possibly. You can check voltage at the switch when pressing the brake pedal and also check it back at the wires also while someone is pressing the brakes) Check all fuses under dash and hood if no power to switch or back at the wires.
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Old 02-05-2013, 03:49 PM   #5
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In the 87 yj 4.2l are there supposed to be reverse lights? I find it odd no lights come on the back up...
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Old 02-05-2013, 08:50 PM   #6
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Here are the schematics and troubleshooting charts from the FSM. Enjoy
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