One problem related to back up light switch has been reported for the 2004 Dodge Ram 2500. The most recently reported issues are listed below.
I have a 2004 Dodge Ram 2500 with a 6 speed manual transmission. The sensor in my manual transmission that turns on my reverse lights failed. I replaced my sensor and the problem was solved. I am concerned because not only can I not see when backing up, other drivers are not alerted to my vehicle moving in reverse which could be dangerous to myself and others. There seem to be quite a few of these failures because the part was on backorder from the manufacturer.