Looking at the bike from the back: Under the very front of the gas tank to the left, you will see green and blue wires with a butt type connection, those are coming up from the fan, disconnect the blue wire at the connection and run it to one of the connections on a switch, the other connection on the switch needs to run to the battery +
This is how my 450 is wired.
This is how my 450 is wired.
