The theory behind this crap is that the factory alt wire is roughly 8 gauge and runs through a lot of stuff to get to the battery and or fuse post
So by making the jumper you get direct flow to the fuse post plus the factory system. Now if someone were to take a good ten feet and make it a tuck now than id be interested because all its doing is adding crap to clutter the bay. Especially zzp/ easy performance ones as they are pretty short. I have a write up on gpona for anyone interested
Android Fire