My truck is working fine now, no electrical (alternator) issues, thanks to input from great board members. I'm looking into grounds now, and my FSM isn't much help. The only chassis grounds I have found on my truck (1972 K20) are one from each valve cover to the firewall and one from the pass. side front cab mount to the frame, like this:
Are there supposed to be any others that I have not yet seen? One post I read stated the bed was not grounded because it's bolted metal-to-metal. I thought there should be a cab-to-frame ground but have not found one yet. All grounds on my my truck are factory original. I can add some but I'd like to know if there are more factory grounds that I've missed. Thanks, guys.