Trailer hand brake valve installation diagram needed

this must be a new install

 

you want to put it on Cascadia ?

 

It looks like three airlines go into it. If that’s the case, then it should be like installing any quick-release airline.

 

I think op's truck does not have trailer hand brake and he wants to install it. I know how to install it. I have done it on many cascadias.. beside this hand valve other parts needed. tubing, 3 way splitter, special valve that goes under slipper. I think the name is protection valve...

 

what year is it ?

 

go behind of sleeper. under slipper you will see a valve. from that valves two hoses are going to trailer, blue and red connections for air. make pictures of that valve. front and behind so I can see how many and what colors hoses coming to that valve. post pictures here .