I'm wondering what is the correct way to hook up this kill switch. I mounted the batt in the rear and I can't come up with a solid answer. The instruction sheet that came with the switch states to run the switch with the engine/body ground, but I believe I read that NHRA rules require it to be in the positive cable. I don't know for sure and need a answer. Help me out and any other good tips would be appreciated, like is another cable needed to feed the alt to the battery directly or is just the one cable fine? Thanks all.