Ah Ha, That's why I couldn't source it in the states. It's only available from European distributors since you can tow legally over there. I appreciate the effort and will probably just use a hand lever before I spend the big bucks.
I hope I can make this work somehow. If I wasn't in Ca. my 07' freightliner with 58k original miles would be legal and I wouldn't be having to downsize. Worst case I will have to use a hand operated lever.
The Mico valve will not work with brake fluid. The Mfg. said it is meant for tractors with hydraulic oil used for braking. I am waiting to hear back if the Automann valve will work. Has anyone done this?