I ran into the fuel shut off valve issue. Think originally it was the solenoid that was bad, since I was able to use a test light and see that the relay was working and I was getting voltage to the solenoid, I found the problem wasn't the solenoid.
First, to test the solenoid is good, remove it, disassemble the connector plug and take the two bigger wires (third one was smaller gauge) and quickly touch them to the battery terminals (Black going to negative, IIRC white was to positive) and see if it clicks up. Mine did. If that works then the solenoid is good.
I cleaned up all the connections thinking that was the problem. What I found is that the relay was bad. Even though I would get power through it, was WASN'T getting enough current. This "start" side of the solenoid uses about 50 amps and the contacts in the relay was not allowing enough amps to pass through. This is why I would read 12 volts as I was getting the voltage through it.
I replaced my relay with one from Larry B's and all is working fine now. I bought a couple spare ones to have, just in case.
1997 Dodge Ram 2500 CC, 4x4 long bed
2004 Four Wheel Camper Grandby, fully loaded
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