Their is a group of wires, just about by the 3 solenoids on the driver side, that has 4 fuseable links in it. One of the links is for the ignition, and it will burn out, if the ignition on the colum gets hot (the box around the colum). This will happen if the heater motor (in high position), or the A/C is used a lot, or for long periods, these wires are wrapped in the harness, and you will have to search for them. The wires are spliced into one large wire. They are a weak link in the 91-93 Dodge Truck/ Ramcharger ignition circuit. I believe the one that is the culprit is orange. I am doing this from memory, as I had that happen on all my Ramchargers. A/C usage is the worst. The colom box can actually get a hole burnt in it on the bottom, from the heat. Pull the box, and check the wires on the switch, the red one will be burnt looking. Hope I have helped you some. This is all form Memory, and getting towed home a few times, in my various Ramchargers.
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