I need a wiring diagram for a 87 yamaha 50hp 3 cyl. Im a bit confused with the control cable that runs from the controls back to the motor It has I think 5 connections on one end and only 3 on the other......I have it rigged right now so it starts and runs but the oil indicated LED stays on all the time. So I think its not totally right.......I have a Tach I want to wire in but dont have any idea what wires to use.....help