Air Line Fittings

[Grayguy]

Ok, not sure where to post these, but here it goes. I bought a set of air horns that are going in my dad's truck. They came with some kinda electrical valve, but I'm not sure how I go about hooking it up since none of the terminals are labeled. Here it is:

http://www.d.umn.edu/~keen0112/DSC01738.JPG

Also, does anyone know if you can get these "instant Air fittings" back off once you put them on once? Fitting it question:

http://www.d.umn.edu/~keen0112/DSC01742.JPG

[Toyota_Jim]

Im pretty sure the 3 terminals on the valve are, One is always hot, one is grnd, one is the 12volt signal. As for which is which, good luck .

[KILLER"B"3]

as far as the airline goes. Just pull back on the black plastic collar, while holding back pull the line out.

[KWTMECH]

If the air line is set-up like air brakes, you have to push in the black piece while pulling out the line itself