Have you checked the level of the hydraulic fluid in the jack reservoir? It may be using one of those other inputs as a signal.
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Jim and Jennie, Cats=Bittles and Potter, 2000 Dynasty 350 ISC
2013 Silverado 4x4 Towed with R1200GS in bed.
PROV23:4 Do not wear yourself out to get rich; have the wisdom to show restraint.
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