You might try these guys. Classic has a separate division (located in a different state if I recall right) that does early oem stuff. Not sure about the aftermarket units, but probably worth an email. I used one of their kits in my 55 bird. It was ok, and it did bolt right in. This is the restoration link. https://www.classicautoair.com/rest...b6u51rOWruJhErELmsxXbins2_FjR4vUdGxMSKY0mT_Hw
Thanks it was reading one of their manuals that got me interested in what the manual for mine would say.
I'm going from memory here, have the exact same 60's underdash unit. There is the incoming power supply wire and then there is the wire out to the compressor. The wire out goes to your pressure safety switch (if you have one) and then to the compressor clutch. The two knobs on front are for fan speed and adjusting the (compressor turn on) temp. The fan speed is obvious. Fan has to be on to supply voltage to the temp switch. The temp knob is connected to the temp sensor inside which is on the evaporator. It controls cycling of the compressor. I forget which way to turn the temp knob, but just experiment and you will figure out right or left turn makes it colder. Mine's been a while since I used it, having a short that blows the fuse I need to figure out where a likely wire rubbed through somewhere. Mine is set up using R-134a and while the thermal expansion valve is technically designed for R-12 it works just fine with R-134a. The key for good performance with R-134a is you need to remove as much heat as possible in the condenser. The old R-12 style tube and fin condensers are not as efficient at removing heat as the serpentine style new condensers.
Thanks. The original condenser had a hole in it so it’s now got a modern one, new pipes, drier and converted to run on modern refrigerant, it’s still got the big York single piston compressor. There’s no safety switch and the place that did the repairs explained it to me as you have. It blows ice cold. I was just wondering what an instruction book looked like as I couldn’t find one anywhere.
This is manual for Vintage Air repop of Mark IV: https://static.speedwaymotors.com/pdf/725672001VHYinstructions.pdf
The York style compressor is a good one. It actually has a separate sump for oiling the bottom of the compressor, and the top compressor portion does not need oil in the refrigerant like most A/C systems do. The York is popular with the off-road and airbag crew because it can pump straight air. It also has good capacity compared to the small 12v elec compressors.
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