yamaha key switch question

[wd jones]

i have an unused plug on my keyswitch, it is yamaha keyswitch with electric choke and lanyard attachment. The unused plug has 3 male prongs in a triangular arrangement. none of my harnesses have a matching plug. I need to know what it is for and if it is needed in my application. I have a 1996 yamaha 150 carb motor.

any help would be greatly appreciated

thanx
wd jones

 

[JOHN P.]

What Color Is The Wire?

 

[Corpus Skipper]

This is probably the tachometer hookup. I haven't messed with too many Yamadogs, but they pretty much mirrored OMC, and this plug is for the tach on OMCs.