You will have to check the wires going to the switch itself to rule out any wiring problems before considering a bad switch.
First you will need to take the Air Cleaner and look down on top pf the MTX. You will see a connector with two or four cables on it (depends on year). Violet-White wire will have +12V and Violet-Black will be without voltage. You can jump both wires manually and check your lights coming on. If they don't then check if you have voltage on Violet-White. If not then check fuse F23.
If you have volyage but your lights are not working when you jump the wires, then it could be a bad ground.
Tell me what happens.
