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**kwmech** · 07-25-2022, 03:29 PM

You should have more than 12.6 volts at the battery--even after sitting for awhile. Should be closer to 13 or even 13.5 What is the CCA on the battery? Also main battery cables should be 2 ga not 4. 4 ga would be for a subaru or toyota. Does not sound like you have a charging issue. But I would double check all the ground wires. Battery to engine block, block to frame, battery to body. I think, factory wise, there were either 2 or 3 different body/ground wires. Early chevys even had engine to body grounds. With engine running you have the same 14.2 inside the cab

07-25-2022, 03:29 PM	#9
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,393	Re: Help find the missing link You should have more than 12.6 volts at the battery--even after sitting for awhile. Should be closer to 13 or even 13.5 What is the CCA on the battery? Also main battery cables should be 2 ga not 4. 4 ga would be for a subaru or toyota. Does not sound like you have a charging issue. But I would double check all the ground wires. Battery to engine block, block to frame, battery to body. I think, factory wise, there were either 2 or 3 different body/ground wires. Early chevys even had engine to body grounds. With engine running you have the same 14.2 inside the cab Last edited by kwmech; 07-25-2022 at 03:53 PM.