I started the rig up today and heard an air leak. At first I thought it was the parking brake valve with the yellow knob. Turns out it is the lower idiot light cluster. It has 2 fittings on the back of it, one has an airline going into it, most likely it is the low air pressure sensor. The other fitting is not connected. Air is leaking out of the unused fitting and 1 of the electrical sockets. I put a small amount of leak seeking silicone seal in the base of the plug sockets hoping to stop the leak.
I find 2 part numbers 104618-C and W-12684-04 RIGHT anyone know of a source for this light cluster or the manufacturer?