i have a 2002 500 sportsman. the speedo quit working as did the trip meter and also the hour timer. i installed a brand new oem speedo and a brand new wheel speed sensor. still not working. 4wd works fine. all dash lights work as they should. speedo light comes on. there is power to the red wire on the speedo plug. there is power coming out of all three circut breakers under the hood with a test light. what should i check next?