73 duster with a 318. Like the title says the radio turns off for 3 seconds every time i hit the blinker. I found the problem, just thought id' put this up here if anyone else is experiencing the same thing.
I just put up with it for a while because I didn't want to chase down electrical gremlins. Then i started having charging problems. Turns out the alternator was crapping out and also killed the battery. Whatever low voltage situation was going on was doing something screwy with the radio-blinker combo. The battery was just bad enough that it wouldn't take a charge from the new alternator, but just good enough that it held a charge from a battery tender.
