Alright I bought a 52mm Greddy electronic boost gauge. It has four electrical wires coming off of it. The only one I know where to put is the ground. The red is supposed to be to a constant 12V source. Where should i tap that into? The next is supposed to be to the ignition. Which ignition wire should I tap that into? And the last is supposed to go to a parking light. Which wire should I tap that into?