As it turned out, our jacks would not come down because of an electrical short having to do with the parking brake system. Even though the parking brake was on, a message on the dash said it wasn't, so the jacks would not come down. The problem was a wire harness which had simply been "pushed up" out of the way during manufacture of the RV. Over time it drooped down over the top of the parking brake and a cotter pin in the parking brake mechanism rubbed on the harness each time the brake was applied. The pin finally abraded off the insulation on a wire that had to do with the on/off sensing mechanism of the parking brake. After repairing the wire with a new segment, that wire harness is now suspended with an electrical zip tie to the frame under the dash cover, well out of the way of the parking brake.

2005 Adventurer 33V