Well, after traveling 2,500 miles without a problem, I think I can put this to rest. What I found were two potential problems. One was that the step well cover hydraulic tank was leaking fluid that dripped directly onto the step power connector. The other issue is with the connector itself. It only has a positive locking latch on one side. So it's also possible that it wasn't making complete contact. Maybe a combo of the two issues. Either way, I cleaned the fluid off it as best I could, dried the contacts and had no self opening/closing issues on the entire trip and it operated with the door reed switch as designed.
Now that we are settled in for a few months, I plan to zip tie the connector to keep it tight and tape it up so any fluid/moisture won't compromise it.
In the attached photo, I had already cleaned the dripping fluid from the solenoid above the connector.
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2014 Itasca Meridian 34B
Cummins 340HP
2017 Jeep Cherokee Trailhawk
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