I picked up 14' 1970 sears boat and a 1963 johnson 28 hp outboard for $300 and now I'm trying to get the motor up and running. I'm going to get a set of johnson controls, probably the shipmaster ones. There are 4 wires coming out of the engine (Other that the large battery + and -): red, white, black and green. I believe the red is choke. ANy ideas on what the other 3 are? Do I need a solenoid? Any other pointers on this motor would be greatly appreciated.