One problem related to headlights has been reported for the 2005 Dodge Ram 2500. The most recently reported issues are listed below.
All lights (headlights, taillights, etc. ) come on while vehicle turned off and turn off while vehicle is running. Also, windshield wipers and washers run all the time and can not be turned off. Drains battery while not running, then will not start. Factory trained mechanic says it is a "bad tipm" (totally integrated power module), and the dealership can not order a new tipm as Dodge does not make these anymore (vehicle is 12 years old). My vehicle is practically useless and now valueless, as I can not get needed parts to repair. My experience has been that aftermarket parts (including fan clutch for this vehicle) does not work well and end up needing replacement almost as soon as repairs are done. This really sucks that an american auto manufacturer can fail to make parts available for 12 year old vehicles. I guess they need to sell a new one that bad! not another Dodge, for sure.