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Old 01-20-2009, 04:02 AM   #1
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Default Headlight Switch Repair

Does anyone know the GM parts # for the black connector that plugs into the headlight switch on my 95 Bonneville SE? Also, where can I get the metal connectors (delphi?) that are crimped onto the end of the wires?

I've already replaced the headlight switch and connector once before (grabbed the plastic connector from the junkyard) but it has since melted again. This is really annoying.

Alternately, has anyone had success swapping in a completely different kind of switch? I don't care about the ability to dim the dash lights...I just want my tail lights and dash lights to come on reliably.
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Old 01-20-2009, 08:23 AM   #2
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Is one of these what your looking for?

ACDELCO Part # PT146 {2-WAY FEMALE BLACK #12085535}
CONNECTOR,LP-CTSY SQUARE
$13.71$0.00$13.71
ACDELCO Part # PT103 {2-WAY MALE BLACK #12085481}
CONNECTOR,LP-CTSY W/LEADS, SQUARE
$16.01$0.00$16.01
ACDELCO Part # PT256 {3-WAY FEMALE BLACK #12101864}
CONNECTOR,LP-CTSY
$17.26$0.00$17.26
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Old 01-22-2009, 06:43 PM   #3
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I went to the local junkyard and grabbed a headlight switch and wiring harness from a 99 Bonne....no luck. I connected all wires in the proper order, but I cannot get my dash and tail lights to come on.

Is there a ground that I should check somewhere? This is really frustrating.
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Old 01-22-2009, 06:52 PM   #4
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Have you checked all your fuses and relays?
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Old 01-22-2009, 06:55 PM   #5
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Quote:
Originally Posted by funkrocker049 View Post
I went to the local junkyard and grabbed a headlight switch and wiring harness from a 99 Bonne....no luck. I connected all wires in the proper order, but I cannot get my dash and tail lights to come on.

Is there a ground that I should check somewhere? This is really frustrating.
yes there is, do a search here for "ground bus"
one on both sides of the car in same location

corrosion is our enemy when it comes to our electrical in our Bonneville'*

the ground bus is the most common area for corrosion

Last edited by Toddster; 01-22-2009 at 07:08 PM.
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Old 01-22-2009, 07:03 PM   #6
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Quote:
Could be a ground bus problem. If you take off the trim holding down your carpet next to the drivers seat, you'll see a bus. Just make sure it'* all clean. Sounds like a ground problem somewhere. Did you check the battery terminals, battery end, and where they ground to the car
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pull it apart carefully and inspect for corrosion
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example of corrosion on the bus:

and back of wires:

The reason for this corrosion is because over time our inner door moldings shrink and allow water to splash in the interior and the water seeps down on top of these two ground areas.

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Old 01-22-2009, 07:04 PM   #7
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dahh Dan! haven't you done a write up on this yet???
jk
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Old 01-22-2009, 07:14 PM   #8
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No, I have not. Looks like you have everything needed to do one.
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Old 01-22-2009, 07:28 PM   #9
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Thanks for the quick responses, everyone. I'll check the grounds, fuses, and relays tomorrow and report back.
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Old 01-22-2009, 07:36 PM   #10
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No, I have not. Looks like you have everything needed to do one.
done
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