Probably the biggest reason for fighting, not switching, was the weird wiring. There must be a load or draw on the voltage regulator to control its output. GM accomplishes this by wiring the No. 2 ...
Cars, trucks, RVs, and motorhomes run dual 12-volt batteries for various reasons. Depending on how you wire a two-battery 12-volt system, the result can be a 12-volt system or a 24-volt system—or even ...