Re: Need Need Help to find Ground Locations 69 Camaro
I don't have an AIM in front of me, but on our 68RS, the negative battery cable is terminated at the water pump. There is a ground from the engine to the frame / motor mount bolt on driver's side. Then I have two ground straps from the firewall to the engine behind each valve cover, but I think I added one of them a few decades ago. Your negative battery cable also has a ground from the battery to the body on the passenger side fender.
You can never have too many grounds. I would remove each one at both ends and clean the mating parts, apply No-Ox and put them back on. I have used star lock washers too, but not really needed.