Like by where the hose connects to the compressor there should be a fitting to screw in a high side pressure switch, if you did get a hose for a 94 f150. At least thats whats the pictures show on the advance website.

Oh okay, sounds simple enough. I'm gonna have them to do the opposite. Have them cut the part off my 92 hose and put it on the 94 hose so it can be a barrier hose.

 

The high pressure switch is located on the manifold assembly that attaches to the back of the compressor:


Look at location A4. It may have to be plugged if you do not installed a high pressure cutoff switch. I am not sure if it has a schrader type valve in that port to prevent it from leaking to the atmosphere.

 

OK, the reason I don't have one is that I have since converted my truck from the 300 Six it had when I originally did the R134a conversion to a 460 now. When I swapped in the 460, that is when I added the 94 condensor.

With regards to the manifold, the 300 manifold would not fit so I used the 460 manifold and mated it to the 300 (barrier) hoses just using regular hose clamps. I think the 300 manifold had the switch already in place, I just did not wire it in.

 

Ahhhh okay it all makes sense now. So how much freon did you put in once done? Does a 91 r134 conversion, take them samebas a factory 94 r134 system? And you wouldnt happen to havent a pic of them new condenser from them front of the truck would you? Want to make sure I get the right type haha