[DanEC]

!!@%#&$ - It wasn't the &*%#@@ trailer relay. Apparently that nearly severed connection at the trailer relay fuses was hanging on by a strand or two and there wasn't a problem with the relay. I installed another one and I have all the same issues - no brake lights with headlights off. Left brake light only with Lights on. left rear turn signal only with pressure on brake pedal.

More voltage checks

Flasher unit:

Left turn signal on: Brown 12.5V Yellow 2-9V flashing Blue .3-9V flashing

Right turn signal on: Brown 12V Yellow 6.3V steady Bule 0V

Power from Brake Light Switch - Pink wire under dash

Left turn signal on: 1.5 - 9V (with flasher)
Step on brake: 12 V steady with brake light in rear

Right turn signal on: 2.3V steady
Press on brake: 12 V but no brake light in rear

Turn Signal leads - I disconnected the two tan (brown) wires since they appear to only operate the headlight flashers. Disconnecting them didn't seem to change anything

Left turn signal on:
Blk/Gr to Green 1.5 - 8V flashing
Black to Yellow/Red 11.5V (I think this is power to the turn signal
Blk/White to Yellow 1.5 - 9V

Right turn signal on:
Blk/Gr to Green 6V
Black to Yellow/Red 11.5V
Blk/White to Yellow 6V

I don't know what to make of the above. It could be as simple as a bad flasher ( doesn't seem to be flashing on the rigtht side. It seems like on the right side it's just getting 6V from the flasher.

Could be the turn signal switch??

Could be both ???

Guess I'll try a new flasher since that is pretty cheap. Man, I hate electrical stuff.