The 72 has a printed circuit. I believe it is not grouded . It has a ground wire built in the connector. You could run a test wire to the ground circuit or run an auxiliary ground wire. The ground circuit is pretty obvious, it has a screw in the copper print.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
In the Gallery Forum