Okay I have a Fuel Pump Relay and a Electric Fan Relay, both with switches. Ok. theres 2 parts to the relay I think. Well thats what I have. Its the part with the prongs and the part it plugs into. The one it plugs into has wires already in it. Will it work if I just wired the part with the prongs and wired them where they needed to go? And not use the other part?