Next
Everything is hooked up.
- Front light is OK.......
- High beam is OK............
- Parking light (separate harness because of law here) is OK ...........
- Tail light is OK.........
- Dome light is OK......
- Turn signal front not OK
- Turn signal back not OK
- Brake light not OK
So starting at top of your list.
Headlights work with headlight switch? H4 bulb?????
Yes on stage two when I pull out the switch. Yes, with H4 bulb
High beams work with dimmer switch?
Correct
Park lights work with headlight switch? T10 bulb?????
Yes on stage two when I pull out the switch. I bridged it on the headlight switch. They have to shine together with headlight (http://6066gmcguy.com/parklamp6466.html). Bulb is a 12V, T4W with a Ba9s socket
Tail lights come on with headlight switch?
Yes, correct
Dome light is satisfactory.
When I turn the headlight switch to the left or right (I don't know it by heart) the bulb burns
DO YOU HAVE ANY LED BULBS? These may take a special flasher to work. May take a relay or two to work.
No LED bulbs
I will cover the "not" working after we get these answered. I will wait a few minutes and then go to bed.