one of my bat neg goes to infront of the engine, right where the support bracket holding the plastic shieild, i used the same nut, but put the connector right inder the bracket and have the nut infront of braket and wrench it all tight, the next grond from bat neg is to the chassi, i did 2 of them, one 4guage i had left over to replace the cut one i did on the stock wire, and a big 1 gague to a new chasi spot next to the fuse box on the left of the fender wall. and i have bat pos 1 guage to the alternator pos.