I have fixed the problem
In my coach. I hired the electrician from a closed RV shop here in Torrance Ca. We found that there is a delay circuit on my battery relay that delays the power to the fuse panel momentarily until full power is up then closes the battery relay. This delay is driving my slide controllers nuts. Lippert suggested we wire 12 volts directly to the controller and bypassing the delay circuit and now the hall sensor short does not come on. So we disconnected the one wire From the fuse panel that controls both wall slide and bed and wired in a relay bypassing the delay circuit allowing both controllers to see direct, fused 12 volts. Now when I turn on my battery switch no more hall sensor short and the slides work excellent. I know there will be questions about grounds. During this ordeal I did find loose grounds that since removing the wires cleaning and reinstalling have caused my generator to start better but didn’t help the Hall effect power short. Lippert had me run a ground directly to the battery and then made different grounds to see if I had a ground issue. Why the excessive momentary drop in voltage is unclear except maybe change the delay circuit board that is attached to the main battery relay under the bed. Anyway this has been a real PITA. Thor was no help. Lippert was great.
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