1978 CJ5 Fuse Panel Problems

[TR Puffnstuff]

Fellow CJers, I posted a thread under a different username about 1978 Electrical issues but I could not log in today. Anyway, I've traced my problems back to the fuse panel. More specifically, the wires on the back. This is my first Jeep and I am unfamiliar with what is behind the fuse panel. It is nearly 40 years old and has seen better days. My heater motor keeps cutting out because a wire on the back of the panel is loose or corroded. What is back there?

 

[Lumpy Grits]

If the other blower worked fine and now you blow'n fuses, you're draw'n to much current and the circuit is not built to handle this newer blower.
Disconnect the battery POS(+) cable and unscrew the fuse panel to see the back. Who knows what a PO could have done to it.
LG

 

[IOPort51]

the wiring in the back of the fuse block is connected to the board with ring and rivet connectors , these can fail. In some cases there will be just enough contact to show 12v no load. Worst case power at the battery , go through a 40 amp Bosh relay, a fuse or better yet a circuit breaker and use the accessory circuit through the dash switch to the bosh relay.