Blew my 1983 90hp Evinrude and purchased a 1998 Johnson 150hp. I have the 150 rigged and ready to go except wiring. My old control cables seem to work but I'm not sure about the wiring. Some of the wires match up but some don't. Two that I have questions about are the choke from the 83 (purple/white) doesn't have a match on the 1998 harness, also the 1998 has 2 black/white which should be a stop 2 ignition wire, but the manual only calls for one. Is this going to be possible or will I have to have 1998 controls?