LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

REAR taillights wont turn ON!!!(but they work when i brake??)

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Old 03-12-08, 08:52 PM
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lp_yang
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Default REAR taillights wont turn ON!!!(but they work when i brake??)

no fuse is blown, all the other lights work...they come on when i brake but they dont when i turn on my parking lights..bumper light and corners tron on but my rears dont????any ideas??? oo and this happened when i hooked it up to the trailer....any help guys???
Old 03-12-08, 08:58 PM
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Neofate
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I would check the fuse, relay, ground, and wiring -- In that order.

Check your wiring from the trailor,.. Sounds like your popped a wire,.. Test it, fiddle with them and so on. It has to be one of the above four

Sorry I couldn't be more specific.

Good luck
Old 03-12-08, 09:15 PM
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LiCelsior
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trunk harness maybe?
Old 03-12-08, 09:53 PM
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lp_yang
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Originally Posted by Neofate
I would check the fuse, relay, ground, and wiring -- In that order.

Check your wiring from the trailor,.. Sounds like your popped a wire,.. Test it, fiddle with them and so on. It has to be one of the above four

Sorry I couldn't be more specific.

Good luck
thanks i'll do that..hope it works....i need the car to be perfect for friday(movin day)
Old 06-15-10, 07:00 AM
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skymasters
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Holy carp! I am having the EXACT same issue now. Fuses are good, and I can't seem to figure out why the two rear corner tail lights have no power but the trunk trail lights come on. The corners work for the brakes, just not the parking lamps.

I have checked the trailer wiring with a continuity tester to make sure that the connections are good (They are) and the turn signals and brake lights work. Seems that the green wire with orange tracer is just getting no juice.

Any suggestions?
Old 06-15-10, 09:49 AM
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BLKonBLK98
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http://www.lexls.com/tutorials/lighting/bulbout.html

this is a very good possibility. i am having a similar issue where my outers only work as clearance and my inners only work as brake. haven't been able to track it down though.
Old 06-15-10, 05:44 PM
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Lexozz
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That trailer harness is def the problem. When I had it on The MDX, the left turn signal would stay on steady instead of flashing and so did the indicator on the dash. When I disconnected the harness problem was solved.
Old 06-15-10, 06:02 PM
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BLKonBLK98
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missed the trailor part completely.
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