hey im just trying to figure out how to deal with this harness and computer. i rather run the fuse panel for protection of everything but im not sure on what wires to cut or use. im running a 5.3 with a 4l60e out of a 2002 silverado. im gonna run autometer gauges and i want efans. i know most will say nelson tune but how does that whole system work? how much? thanks.