I have mine grounded to the shifter where the plastic connects to the chasis, and it doesn't pop ever. Go out and get the thickest wire possible for the ground wire. Not only should you use a wire ring on the end, you should use a wire forked end to connect it to the amp. Go to Radio Shack, they have the stuff, and they know a lot about it. Go to a big one though, not like the ones in the mall that only sell phones and TVs. Hope this helps.