Emarsh, sorry to hear about your wife, wishing you both the best. Though this is a low priority now, when the time permits, snip off a short length of the supplied air line, I believe it was 1/4" O. D. , and go to a hardware/home depot, whatever is available. If you are running two horns, you will need one brass "T" fitting, which you can get in 1/8" NFPT. You will need two 1/8" NPT to 1/4 hose brass compression fittings for the horns, 3 more of the same for the "T" . Bring your solenoid valve and get two brass compression fittings for the valve, If I recall they were also 1/8"NPT, but check to be sure. Next is the run of hose from the solenoid valve back to the tank. Check the tank and get the appropiate sized compression fittings for same, could very well be 1/4" on the tank. This will get you to the tank and back out to the pump ( working backwards here). Last is to check the pump and purchase one compression fitting for it's outlet, that will run to the tank. It's either 1/8" or 1/4" NPT. Make sure you use the brass inserts, for lack of the correct term, which you place inside the air line to add stiffness and a good seal when using the compression fittings. Also, there's no reason that you can't use the push type fittings on whatever you have already received, with the compression fittings being used in place of the missing Rickson parts. If you can't find what you need, send me a list and I'll pick them up for you and ship 'em out with a receipt, you can send me a check when time permits.
Scott W.