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Interior lights

940 Views 4 Replies 3 Participants Last post by  jayhunt
Here's a riddle for you Electrical Wizards out there:
Why won't my lights go off when I press in the door jamb switch with the switch is at the middle position?

Passenger Side:
I bypassed the interior lights timer with the jumper wire as per Eric's tip.
It worked great: With the door open and the the interior switch at the position, I push in the door jamb switch and the light turn off.

Driver's Side:
When I push in on the door the light stays on.
1. Replaced the door jamb switch with the buzzer jamb switch because I knew it was working: No Change.
2. Replaced switch with passenger side: No Change.

Back to Passenger Side:
Replaced the original passenger switch that I used as a test back on the passenger side. Now it stays on when I push the door jamb switch. Made sure that I didn't mix up the switches.

General notes:
I thoroughly cleaned all switch terminals on all switches with alcohol, contact cleaner and sandpaper where needed.

It appears I have a mysterious ground issue. Any ideas??
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Did you unplug the wire(s) before unscrewing the switch, or barring that, hold the center of the switch to prevent it moving while using a regular wrench on the fixture?
If not, it's entirely possible that the wire(s) got cut or twisted up in such a way that things are gounding someplace other than through the switch.

The switches are nothing more than ground contacts with spring loaded plungers to allow the contact to be broken when the plunger is depressed. If depressing the plunger doesn't break continuity, the wire is likely shorting to the chassis or there's something radically wrong with the spring and end clip of the switch. (very unlikely though as it's more apt to actually fall apart or not allow continuity as opposed to the other way around)
So it's basically grounding somewhere? What are the possibilities?
Remove the light unit to eliminate that as faulty. There should be two wires connected to the light unit - 12V+ and one for ground. Connect a voltmeter or 12V light bulb to those two wires and see if things work the way they are supposed to.
I solved the riddle!!

One of the jumper wire terminals wasn't making a good connection because I didn't crimp the wire to the male connector hard enough. Now they work perfectly!

Thanks for the quick replies. Just writing out the problem in the post helped me realize that it had to be some component that both lights shared=jumper wire!
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