BAC RV Club Forum
General Boards => Technical Support => Topic started by: Allen Heath on November 11, 2026, 04:30:42 AM
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My Power Gear (Valid) AIR ONLY system is NOT allowing Auto Level mode, just beeps. Manual control of the bags and travel mode are fine. The dash parking indicator is on BUT there is NO Park indication on the Valid control board arm rest panel. So I want to trace which wire is supposedly sending the Park Brake signal to the control board to see if I have a bad trace on the "obsolete" control board, or if there's a wiring problem in the harness going to the control board. I can't find anything online that definitively shows the pinouts of the 8 pin connector. AI searches is giving me a lot of conflicting information. What are the pinouts on this connector? Also, where is the Nason switch located (I don't see it around the parking brake valve.) As I have the Park indication on the dash, I think the Nason switch may be okay, but maybe there are different wires to the dash and to the Auto Level control panel.
Attached are pictures of my 8 pin connector. I may have found a constant 12V power and a ground, but don't seem to find what should be the switched ignition source, and don't seem to have another ground. AI seems to be inconsistent if the transmission neutral wire would be 12v or ground. (Coach starts fine, and transmission pad shows N thus a tranny neutral signal seems to be okay. Shifting from neutral to drive shifts the pad to Travel mode. If the pad is powered down turning on the ignition powers up the panel thus I believe most of the panel is working correction.) So, it would be very very helpful if I knew what pins (or color wires) have what function. Since the pad does NOT indicate "PARK", I think that is my problem preventing it going into Auto Level mode.
2007 Patriot Thunder, Air Only (No jacks)
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The Valid Power Gear Service Manual is in Coach Assist under Leveling Systems. Pages 50 to about 65 show the connector wiring with signal names and wire colors.
Steve