[chip2]

A few years back, the Volvo dealership converted the a/c in my wife's '91 740 to R134a. It has done fairly well from a cooling standpoint, but the compressor died. I have a new compressor and bought the newer style manifold/gages, but now the high side connection is wrong (same style as the old R12) and of course the new manifold gage set will not attach to my vacuum pump. I was always very successful with a/c work in the days of R12, so have the basic skills. What adapters are available to meet my needs?

[CaptainRich]

The appropriate adapters should be available where you buy your refrigerant.
Make certain you replace all of the oil that came with the new compressor. I won't work with R-134a.

[chip2]

Thanks, the comp came with the correct R134a oil