Ah. When Yamaha puts extra jacks on the wiring harness for future expansion they also give you the plug, but with the wire holes are plugged with tiny rubber stoppers. You need to buy a bag of pins which you will attach to your switch wires and insert into the plug. Sounds complicated but it is not.Pins? Its obvious I'm a Winch Noob!!!
See similar situation here:
DISCLAIMER: I assume no responsibility for any damage you may cause by following this guide. I am starting this post to document how I hooked up my reverse lights using the factory wiring. It took me a bit to figure this out, and one blown reverse switch, but I have been running them for a...