Re: Getting brake lights to work
OP, my curiosity is sparked by two interesting things you note:
1: turning on the headlights causes the problem
2: disconnecting the turn signal makes the problem go away
My '69 had an issue where:
1: when I turned my headlights on, the turn signal INDICATOR in the dash came on inappropriately.
2: If I disconnected the turn signal, this problem went away.
I regrounded the turn signal and this problem went away. It made me think that somehow, with power going through the headlight, that current was somehow finding ground through the switch or something, through a path that went through the indicator lamps and activated them... or maybe that explanation could be way off , but anyway I wonder if whatever the true explanation is, maybe something similar is happening for you, and the problem might go away if you improve the ground to your turn signals.
It'd be easy enough to test. Run a jump wire from your turn signal lamp assembly to ground, and see if the problem goes away!
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