What is this switch for?

Small toggle switch just below the speedometer...

 

I'm interested in this, mine doesn't have it! I wonder if it is for something to do with heated grips?

 

Definitely not factory, are there wires running to it?

 

I don't think it's heated grips since I already took those ugly grips off and there weren't any wires running to them. I thought it was factory at first since the mount looks like a stock piece, but after a closer look I see that the wires are neatly wrapped in black electrical tape rather than the nicer black tubing used by Yamaha. They are kind of extra long and make a big loop on their way to entering the back of the headlight bucket. I also have a green wire coming out of the headlight bucket that used to run to the air horns that I removed, so I guess I need to get in there and sort out someone's mess.

 

Welcome to the dreaded POS......the Previous-Owner Syndrome.

 

Switch removed! It was the red wire tied into the green headlight wire?? Seems very strange...

 

Likely.. someone may have had a set of driving lights installed. They are running (whatever?) off the low-beam circuit.