Went to replace my handwarmers,on 2006 mxz500ss bought OEM set OMG! who design these! the wires are twice the size,you will need to drill your throttle handle out to 1/4" for wire to come through to put on (Soap don't work). Found black permatex on bars and in handle works best. Don't hammer on!! get a friend with big strong hands your going to need him to push on and twist. Good luck!! Gotta be patient!