Sabrewings, good info. I made the example of two 8ga. wires, as it is easier to do the math than a 4ga. and a 12ga. Regardless, like you said you are cutting resistance and in turn increasing current...which is good, to a point. However, I am not interested in trying my luck with what could or might (or not) occur when that long, relatively thin stock wire starts taking on more current than designed from the factory. It is already underrated for its duty, and I feel much more comfortable not taking the chance that it would take a dump. There is nothing to be gained from running a short 4ga. and that long 12ga. IMO, yet there is potential to cause issues. For me, that makes the decision simple.
