The battery in our (converted) 1991 GMC G2500 Vandura has a battery with three terminals, which I believe is now dead (reads half a volt with multimeter). I'm guessing the second positive terminal is for the interior lights and so forth?
We actually have a lithium ion GoalZero Yeti 1000 which we use as a house battery (cooking, heater, extra lights, etc). I've always been meaning to rewire our interior lights to the house battery so that we can run them all night without killing the starter battery.
Can I just replace this battery with a more conventional two terminal battery and wire what was previously connected to the other terminal to the house battery?