So I am putting a Delco 22si hp 150 amp alternator on my truck. I am finding two different wiring diagrams and I'm not sure which one to use. The first just has the ground wire and the Batt wire. The second uses those two wires plus two other wires at the top. Two blades labeled 1 and 2. 1 is for a sense wire and 2 is for a excite wire. So do I need these two wires or no?