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 ...

For most of us, purchasing a vehicle and leaving things untouched is nigh on impossible. Apparently it's ingrained in our hot rod DNA to mess with things better left alone. Sometimes, however, it's ...

Wire custom sensors safely using the built in Holley EFI Power Tap. This connector provides clean voltage without cutting ...

Here is a simple mod to allow the speed of any 12V fan to be varied. All we need to do is insert a rheostat or variable resistor in the 12V wire to the fan. The rheostat should be rated at least 3 ...

Edison was right; direct current is better than alternating current. Tesla and Westinghouse won the current wars, because it was easy to transform into different voltages without electronics, and they ...

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