HWH Parking brake air pressure valve

[1doodadd]

Does anyone know where the HWH Leveling parking brake pressure signal valve would be? I believe I have a loose connection thus not sending the Release signal to the HWH Leveling system. I have a 2000 Beaver Marquis Amethyst 42 with both Air and Hydraulic leveling systems. I am in the process of looking and if you know where to start I would be Appreciate the help.

[azpete]

i have seen 2 types of park brake signal valves. one is round, about 1 1/2 in diameter, and 3/4 thick. it is cut into an air line, and has two wires running from it.
the other looks like the nason air pressure switch, and is mounted into a air supply block.

[CountryB]

On my 2005 the switch is located on the parking brake valve switch (which is on the driver's left console). It's threaded into the bottom side of the switch.

The stop light switches and nason switches are on the treadle valve (foot brake) where it sticks through the firewall.

[1doodadd]

Thanks Mike I was hoping you would chime in with some info. I am starting there as azpete has suggested to begin to solve a problem I am having leveling my coach and the control touch panel. Everything I am reading in the HWH service manual is leading to possibly a replacement control box.

[CountryB]

What model HWH system do you have (i..e HWH 2000)?

[1doodadd]

Its the 625 series. And the air pressure valve was right where you said it would be. Paul ak azpete is telling me I have a bad contact somewhere in the system. Most likely in the signal to the control box telling it the parking brake is released and will not activate to level. Cant get the travel light to go out on the touch panel. So scratching my head wishing I had a schematic of my system. Manual says certain wires are colored in blue and turn out all to be red. It will take me some time and when I find out I will post what and where the problem was for others to shortcut there trouble shooting.