Rear reading lights (Update, they work) - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-13-2005, 10:49 PM   #11
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Sorry...meant light bulbs. But I am going to the yard Saturday for a new headlight switch connector.
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Old 05-16-2005, 10:09 PM   #12
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Where does all this wiring run? To one light then over to the other? Somewhere these wires run together and something has happened to them.
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Old 05-16-2005, 10:23 PM   #13
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Here'* my theory. If you don't see any burnt wires then check the connectors. Add a little dielecric while you are there. So far most of the electrical gremlins in my car were solved with a little contact cleaner and some dielectric grease.
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Old 05-16-2005, 10:26 PM   #14
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Which A-piller, driver or passenger?
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Old 05-16-2005, 10:28 PM   #15
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Here'* a part of the car that doesn't get much attention. The connector seen in the upper left corner of the headliner is behind the A pillar trim. There is only one orange (+12v) and one white (switched ground from doors or interior lamp relay) wire in this connector which means that all splices are within the headliner harness. After being very aquainted with the wiring harnesses in these cars, I find it hard to think that the problem is in the splices
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Old 05-16-2005, 10:35 PM   #16
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So the driver side A-pillar. But the connector isn't the problem, since the front lights still work. It doesn't look like the rear light wiring branches don't break out at the same point. Is there any place in that harness that is just for the rear lights? I suppose the whole headliner has to drop to check this out, am I right?
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Old 05-16-2005, 10:45 PM   #17
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At some point, the orange and white wires split into 6 branches each: two rear lights, two front lights and two visor lights. I haven't removed the tape to physically see where the splice is located. It is more like branches from one location rather than an "in and out" from one light to another.

The harness is taped and stapled to the headliner so it would be difficult and potentially damaging to pull the wires out so you can test.
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Old 05-16-2005, 10:58 PM   #18
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Now it seems to me that two seperate things happened to my wiring at the same time. Fudge.
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Old 05-16-2005, 11:02 PM   #19
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I came across 3 splices:

Orange splice is just before the 4-way intersection at upper left corner
Black splice is just after the 4-way intersection at upper left corner (this is just the grounds for the switches to manually turn the lights on)
White splice is just before the several branches to the center module. Right where the white tag is.
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Old 05-16-2005, 11:49 PM   #20
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Thanks for the info. Are you checking this out hands on?
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