Yes I have talked to Dennis a number of times although he is not very helpful as to how the coach manufacture installs the system. He knows nothing about the transmission interlock or the airbrake wiring which both have to be correct for them to work properly.
I definitely have a wiring issue as someone in the past has changed a few things. For instance, under the parking brake valve is a switch with three wires, two were cut and rerouted somewhere else and third wire, the red one, is not even connected to anything.
First major problem is the pump motor is energized with the ignition switch in the on position, trying to figure out how to remedy that.
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2015 Fleetwood Discovery 40X