1972 olds 442 covertible--some time ago my aftermarket ampere gauge shorted out. I addressed it by bypassing the gauge. Car runs, but power top and radio and tape player do not work? Put in new relay in fuse box, no fuses blown, replaced firewall relay. Any body know what i can try next? I will take my volt meter out and check voltage at accessory fuse location? HElp!!!!!!!!!!!!!!

 

The only thing I can suggest is either start at the end or the beginning of the circuit to see where your missing voltage and go from there.

 

Exactly. These two circuits are not connected - they are completely separate, so you need to systematically go through the entire system, one step at a time, to find out where the power isn't getting through.

- Eric