Having lots of issues with my lights on my 66. Started out with no headlights and no dash lights or tail lights when switch pulled to headlight position, but otherwise everything worked. Figured switch was bad so replaced it but now only my headlights and parking lights work. Put old switch back in after cleaning the headlight terminal and still only headlights and parking lights. Using a jumper wire I can jump the battery red terminal on the switch plug to everything else on the plug and they all work. But jumping the brown/White feed from the fuse box will not, even though I have voltage there. Also when parking lights are on, there is a faint glow from the headlights.

 

Replace the dimmer switch.

 

Check your grounds. Did you check the tail light fuse?

 

Yes all fuses have been replaced, and the fuse holders cleaned. When I bought the car none of the lights worked because of rusty fuse holders. After cleaning, everything but the headlights worked. I considered the dimmer switch but looking at the wiring diagram I don’t see how it would affect the panel lights, dome lamps, brake and tail lights. Also I don’t understand how just swapping the headlight switch caused these issues, even after putting the old one back in.

 

There are differences in some headlight switches, as the parking lights on your car come on only in the park position.

 

Yes, I have the correct switch. The parking lights work per pre 68 design, it’s just that my dome, stop, tail, and panel lights no longer work, after only changing the headlight switch.

 

Do you have power at the dome light, stop, and tail light fuses?

 

Yes I do. I also checked and have power at the stop light switch.

 

Lets just do one of the lights in question, brake lights, did you check for power at the lamp socket?

 

Ok, so I rechecked power at the stop, tail, and dome light fuses this morning, and no power. But had power at the heater fuse. So I took the fuse panel apart and found power at the terminal for the stop, tail, and dome light fuses but not on the fuse panel side, plus lots of corrosion on all the terminals. Cleaned everything up with navel jelly and then coated with dielectric grease. Now everything works!!! So it was corrosion. But I still think my original headlight switch is bad because you have to wiggle the **** back and forth to get the lights to come on sometimes. And unfortunately I broke the wire off the fuse holder for the dome light 😡🤬. Is there any source for new fuse holders?

 

Joe P found them at Del Mar Wire and Products
http://www.delmarwire.com/home/fuse-block-terminals/

 

Del City has them, as well.

https://www.delcity.net/productsearc...ock%20terminal