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 ...

It wasn't immediately clear how Tesla would go about reducing the wiring harness so substantially, but now we've learned the removal of the 12-volt battery and its related systems is the key.

How to Make the DC Transformation It is time for our codes and our wiring to reflect this, shall we say, transformation. It is time for big steps: 1) Develop a universal standard around 12 volt dc ...