I'm looking at the wiring harness for the '94 Sportboat on the F/W website trying to figure this out...how many terminals are on the back of your switch? In the schematic it looks like three terminals just like mine, B=(battery, Purple/Red wire), I=(Ignition, Purple wire), S=(Start, Yellow/Red wire)...the one left over one you probably have must be the ACC wire (accessory) but its not in the '94 schematic, or in the '95-97 either. Anyway hook up the three wires as I have listed here and then the one left over goes to the acc terminal....
Did yours come with 4 terminal switch orginally? From the schematics it does not appear to be the case. Is this an I/O, the reason why I ask is because the OB models have a different ignition switch with different positions...
http://www.fourwinns.com/upload/Documen ... orboat.pdfhttp://www.fourwinns.com/upload/Documen ... rtboat.pdf