Replacing Door Lock Cylinder... - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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Old 11-24-2008, 10:16 PM   #1
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Default Replacing Door Lock Cylinder...

When I removed my door lock cylinder, I managed to disconnect everything from the cylinder except for a single irksome cable. It is black and seems to lead to a lightbulb (?); however, the light-bulb is connected almost like a fuse. The black wire leads to the tip of it while the bulb is connected on the opposite side via another cable but the two parts connect together: I don't understand the use of the black cable.

The wire connects at the very front part of the cylinder near the outside part of the cylinder and I assume its use would either be to cancel the car alarm, to light up the instrument panel when used, or for the power-locking feature.

The problem is I can't find a way to remove the lock cylinder because the wire is connected in such a way the only viable way I see to separate them is by cutting the black cable and I don't want to do that without understanding what it is and if I should do it.

The new lock cylinder set I got does not have this black cable connection and none I could see at the store had them either.

Any help would be greatly appreciated,

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Old 12-06-2008, 11:56 PM   #2
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What you're describing sounds like a fiber-optic line leading from an in-line bulb to a lighted outside door lock. Do your door locks illuminate on the outside when you lift the door handle? I don't know what year or model you have, but that was a common feature on the later Bonnies.

How it disassembles, I'm not sure; a shop manual is probably needed here.
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