Tail light problems

[jmoses]

1971 demon all lights work except driver side tail light blinker, hazard and brake light. On the passanger side all of the above work. I have installed new bulbs, dash circuit boards and flasher under dash. Any ideas. Thanks

 

[RedFish]

Most likely a lost connection in the signal switch contacts. Those contacts change the current path the rear bulbs from brake to turn.
If you have a wiring diagram and locate the signal switch connector under the column. Brake light power goes in on off white when that switch is closed. You could press the pedal or poke a cotter pin in it from the back side as a jumper. The same current should come out on green and orange to left and right rear. Signal switch should interupt one or the other and send turn signal current intead. A failed contact in the switch goes no power no way no how on one of those 2 wires.
I forget right now which is right or left green or orange. You can look in the trunk and see.

 

[RedFish]

Wait a minute. sorry I'm low coffee. If tail light meant the park light there doesn't work either, the bulb socket isn't chassis grounded

 

[jmoses]

I'm going to check the switch u der the column. That's the one place I did not check. I'll post the results. Thanks

 

[abodyjoe]

check the grounds... i would even ground the socket itself.

 

[67Dart273]

socket(s), ground(s), maybe bulb(s)