Dome light
 

67 GTO the dome light will not turn off. So far I have removed both door, jam, switches, checked all the white wires for grounding issues. The headlight switch is new it is turned clockwise which dim the dash lights. If you turn it counterclockwise I can feel it when it’s supposed to turn on the dome light. Do not understand why it will not go off any help would be appreciated.

The white wire in the circuit is being grounded somewhere.

George

You might have a screw going through the wire. or touching it.

To further clarify, consider that the dome light lead has a constant voltage on it. It's just looking for a ground to turn on. That's all the door switches do.

Check behind the dome light for a grounded white wire

If all else fails , plug the old HL switch in just loose under the dash and see how the dome operates.

HL wire underdash
 

Thanks for all your help guys. I have moved every white wire I can find, and the light stays on.
I do not understand what is meant HL switch under the dash.
Thanks
LET

If you have your old Head Light switch.
Just unplug the receptacle from the new Head Light switch.

Hold the old one in your hand , and plug the receptacle into it.
See what it does concerning the dome light.
aka the new HL switch might be defective

HL Switch
 

I guess I'm showing my stupidity by not knowing what you meant by old HL switch! I will try that, i hope i didn't throw it away!

Never throw anything away.... just don't.

Too late, I must have thrown it away, I can’t find it. I must’ve kept that thing for a month.

never need anything until the day after you throw it away :^)

What Greg said. We've all done it and probably won't be the last time we toss insignificant parts away...until we need them...significantly!

I had same problem, ended up replacing he door switches and fixed my problem

I had the exact opposite problem.

In my ‘65 GTO when opening “only” the RH door the dome / console light would not come on.
I fussed with this issue for days until I realized the door jam switch was faulty.
When I pressed or wiggled that RH switch the lights would come on. When I let go of the switch the lights go off.
Some internal issue with just that RH switch.

Well the dome light now works like it was designed to! I don't know why, but it does!

Congrats
You fixed it after all . :thumbup:

Don't be surprised if it gives you a second chance...lol

No kidding!! I kind of expect that!

Dome light crazy
 

Ok, my dome light staying on issue is back! I think i found the culprit, the under dash courtesy light. I took the socket of of the housing and the dome light works as it supposed to, put the bulb back in and the dome light stays off. The courtesy light never comes on. What could be wrong with the courtesy socket????

If your dome light works correctly when you have the courtesy socket removed you are real close to finding the probelm. There is a ground connection being made there and simulating a door switch ground connection. Wrong or broken socket perhaps. Wire grounded? Let us know what you find.

Dome light
 

OK, I think it's fixed, I really never found anything that was obviously wrong. But i replaced the clock fuse, cleaned the fuse socket, took out the fuse block and replaced the female spade connector on both ends of the fuse. I think it must of been to corroded to work, because it has worked now for almost a week. I open and close the door several times a day. Every time i hold my breath! 😁

Thans to all who helped me!!
LET

If the problem comes back I've had two '67 GTO's that if the dome light screws were tightened too much it pushed the lightbulb contacts into the roof cross brace and grounded out turning the interior lights on. Well actually one dome light was turned around and on that one the positive lightbulb contacts grounded out blowing fuses. The light coming on was better than the blown fuse since the brake light was on the same fuse. I bent the top of the contacts down a little and cut up a chunk of plastic water bottle to sit between the dome light housing and roof and no more problems.