[F500] 1988 Yamaha Exciter CDI/Kill switch wiring.....

[Gebhardt, Robert (R.)]

So I borrowed this sled off of a friend in non-running condition with the agreement that I could borrow it for a weekend if I get it running. I drained the 3 year old gas and went through the carbs. It fired up for a short time then died. No spark and no power to the coil. 

Yes this thing is similar to my F500, but it's a little different. There's 3 wires running between the kill switch and the CDI box. One is ground and one grounds the CDI when you trip the kill switch. I can't determine what the 3rd wire does. I did some continuity checks and the wire doesn't get continuity with either of the other two wires regardless of switch position. The switch feels a little mushy so I don't completely trust that the kill switch is good. Any clues what this 3rd wire does? 

Thanks, 

Bob Gebhardt 
#36 Novakar  
2003 F500 Squirrel