Michael

I would rate this as the third most common problem, but probably the most expensive one if you don't know what to do when it happens.

CUCVs have an extra starter relay under the dash. It is known to either rust and not work making the truck not start or to stick in the on position letting the starter run until the wiring harness or the starter itself burns up and is permanently damaged. You should read the two links below and the links mentioned in them before you even put batteries in the truck. This is probably the most important thing to know and to think about so you will know what to do should it happen to you.

The relay is mounted to the plate that the big plug is mounted to under the edge of the dash next to the 4WD lever. It is the bigger silver relay next to two black relays. Its purpose is to switch the 12v single from the ignition switch to 24v to trigger the 24volt starter. It has four wires plugged into it, The red wire is 24 volt feed. Solid purple goes to the starter. Black is ground. Purple with white stripe is the ignition feed. You can unplug these and jump the red to the purple and start the truck in an emergency. There is a post further down with the part numbers.

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