Well that didn't work. The blue/green wire when attached to terminal A the brake lights work but the parking lights are on all the time. I thought I could cheat no that didn't work. When I hooked a hot wire to either one of the green wires that go down to the switch the brake lights come on and do not go out until I unhook the hot wire.
During our conversation I have attached 4 different
wiring diagrams and there is no blue/green wire at the headlight switch on any of the diagrams. I’m beginning to think that cokefirst was correct in saying that someone purchased a universal harness and it is not like the original factory wiring.
Looking at the
wiring diagram:
The blue wire with the red band (BL-R) is connected to the “I” terminal of the headlight switch and controls all of the instrument panel lamps.
The red wire with the yellow band (R-Y) is connected to the “H” terminal of the headlight switch and goes to the dimmer switch for the high beams.
The black wire with the yellow band (B-Y) is connected to the “P” terminal of the headlight switch and goes through the front junction block to the both front parking/turn signal lamps.
The blue wire with the black band (BL-B) is connected to the “A” terminal of the headlight switch and goes through the 3
amp fuse to the clock.
The green wire (G) is connected to the “A” terminal of the headlight switch and goes to the stop lamp switch.
The green wire with the yellow band (G-Y) is connected through the 7.5
amp fuse to the “D” terminal of the headlight switch and goes to the left door jamb switch.
The black wire (B) is connected to the “R” terminal of the headlight switch and goes to both rear turn signal tail & stop lamps and the license lamps.
The yellow wire (Y) is connected to the “B” terminal of the headlight switch and comes from the starter relay.
The yellow wire (Y) is connected to the “B” terminal of the headlight switch and goes to the “B” terminal of the ignition switch.
The blue wire with the white band (BL-W) is connected to the “B” terminal of the headlight switch and goes to the cigar lighter.
Unless you can attach clear pictures of your headlight switch and all of the wires that are supposed to connect to it, I don’t think that there anything else I can do to help you.
doug7740
1955 Thunderbird Blue
