Out of curiosity, what was the failure? On my coach the pump would not run for either the slide or the jack operation. A mobile mechanic in consultation with HWH traced the problem to a micro relay on the control board. Since the mechanic had isolated the problem to a specific part, I found the micro relay online on Ebay. The part number was marked on the relay. I replaced it myself. Works fine now. But it should only be attempted by somebody with some experience desoldering and soldering components to circuit boards! You risk destroying an expensive to replace circuit board.
It has happened to me twice. First time I sent it to HWH, but back then they turned it around in under two weeks for about $100. I bought 5 relays for $20. (You can find them for about $2 ea. online, but the lead time from China is REALLY long. Longer than HWH!)
You can find information on this forum on building a bypass box to operate the jacks without the box in place. I built one, and tested it. it does work! However as you found, the wiring for the slide operation passes through the box, and they will not operate without the box connected. The only thing the box does for the slide operation is turn on the pump. But I have not seen anything about how to bypass the box for slide operation.
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Jim A
'04 Alpine Coach 36' MDDS
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