I have 2005 Expedition with Atwood level Jacks.
The controller turns on, but the lights say the Parking Brake isn't set.
Anyone know where in the miles of harnesses they get the parking brake signal?
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Atwood power control module has two very small connectors that are subject to corrosion. If I remember correctly, the 4 pin connector has the brake signal. Possibly you can disconnect and reconnect to clean the corrosion. Be careful the pins are wire wrap size and can be easily broken. Parts are no longer available. I got so tired of repairing ours, we now have HWH. Should have switched at first failure.