[67_C-30]

Originally Posted by Andy4639

Thanks this is the kind of info I was looking for.

If I connect a cable between the truck battery and both 6 volt deep batteries with the contactor I pictured I can charge them whenever I need to. I shouldn't need a wire ran from the alternator to the extra batteries they should charge through the truck battery. I can turn the charging off also by flipping the dash mounted switch.

Yes, that worked for me, except I didn't have the switch. Knowing my luck, I'd have that switch off by mistake and I'd need to use the winch. 😂

The 383 in my truck was pushing the limits of a pump gas iron headed engine, and it would drag the starter just a little on hot 95+ Degree southern summer days before I put the extra battery in. Never happened again after that. It could help guys with cold weather starting up north too, I'd think.