One problem related to wiring has been reported for the 1998 Dodge Ram 1500. The most recently reported issues are listed below.
Drove my 1998 Dodge Ram 1500 to empty my trash, started back home and had driven less than 1/4 mile when the truck hesitated like it was going to stall out and there was some smoke beginning to come up through dash area on drivers side. Thinking I might have a busted radiator hose I immediately pulled over in the yard of person doing repair work on an old building. When I opened my truck door on drivers side flames shot between the inside of the door and seat. I jumped out of the truck but was not injured. The man saw flames shooting from the truck and I was very fortunate he had a fire extinguisher. He kept spraying the truck under the hood and was able to get the fire under control just as the volunteer fire department truck showed up. There were a lot hot spots and the fireman kept spraying it with water until it finally quit smoking. The main part of the fire was right at the front of the cab of the truck below the motor. You could see the fire burning from the side looking through the wheel wells. They said it had to be caused by a faulty gas line because of the location. All the electrical wiring including the wiring harness was melted. Thank goodness the man had the fire extinguisher or the whole truck would have burned. Very scary incident especially for a woman.