I would start by checking the 3 fuses in the fuse box, I think the box is in the rear of the machine, probably near the battery. Refer to your owners manual to make sure. If the fuses are ok, check the relays that are located near the fuse box. If you still find nothing wrong, then you need to check the wiring, I would first check for power going into and out of the key switch, then start checking for power at the components that aren't working, and work your way back toward the battery. Also don't forget to check any ground wires to make sure they have a good connection.
Yours truly, sincerelly, love always, Josh aka The DirtDemon.