that ground wire kit should replace all ur exsisting grounds and maybe add a few extra... so where ever you see a ground wire... replace it with a new one.... there are no "exact" places to put extra grounds but basically you can pretty much ground anything... like head to frame, head to block, tranny to frame, tranny to block...etc... the best thing to do would be call the company you baught it from and ask them to send you some directions.