ignition switch color codes for a 78 90 hp?

[drasser]

Hey guys I tried the search but did not see this anywhere. Basically the switch that was replaced twice again needs replacing. A mechanic did it the first 2 times but with the obvious bad luck there I was hoping for two things from you guys. first what's a quality ignition switch for a 1978 mercury 90 hp outboard? second what is the color coding for the wires? its kind of crazy cobbled together bunch of wires and id like to fix that but need an idea on factory color codes. Thanks in advance.