With just the negative terminal to chassis it idles better and the ac doesn't cut down like it did before at a stop. I suspect it will get better with the alternator wire done. Having a hard time trying to decide what to do about the alternator wire. I have a piece of 0 gauge mocked up from the alternator straight to the positive terminal. I was thinking of adding a fuse holder on each end and just leaving the stock wiring in place. I don't know though, think a 100 amp fuse will suffice?