My buddies 05 Widetrac prix has been having problems in the lighting area. Seems every 3-5 months, he has to replace at least 3 light bulbs from either headlights, taillights or blinkers.. Currently his right rear blinker/brake light and front left headlight are out.. Any ideas on what may cause premature blowing of the bulbs? Bulbs weren't touched when installed and the housing is not cracked or leaky.