Blinker HELP ???!! Please

[jondancer]

Ok I have spent so much time on these darn turn signals and gotten no where.

So 1971 2wd , hazards all work except for the left front . But I have no turn signals . Blinkers do not work , but the left arrow lights up on the dash. Before my turn signals used to blink and it would make the radio short out with the pulse of the blinker but now nothing happens .
So far I have replaced:
Ignition harness , it was melted at a few terminals, no change ...
Turn signal switch , made my horn work but no blinkers .....
Radio , brand new stereo , stereo no longer pulses with blinkers but no blinker
Pulse at all....
Multiple ground straps installed new .........
I don’t know what to do
PLEASE ANY SUGGESTIONS
Thank you 🙏
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