I replaced my a/c compressor, O-rings, and receiver-drier today and put a vaccum on the system for a while - so far so good. Clutch operation is good also so I'm ready to charge 'er up.

Dumb question (well, maybe not so dumb since I don't feel like blowing my face off) - which metal line is the high and which is the low? On the driver's side near the strut tower and brake master cylinder are two lines, side-by-side that both have valves on them. 50/50 chance, but not good enough for me. Anyone know which is the right one? It looks like the big one goes to the a/c supply on the compressor, but without disassembling all the hoses and crap around the J-boot it's difficult to follow the routing. Can someone confirm? TIA.

 

Here you go.
https://rennlist.com/forums/attachme...tid=28078&stc=
The yellow is the cold side, red is the hot. Do not touch the hot!

 

Looking at the lines the LOW side fitting is FORWARD of the HIGH side fitting.

The LOW side line is closest to the engine, the HIHG side is closest to the fender.

If you have R-134 fittings you cannot get them reversed.

There is a second LOW side fitting on the manifold at the compressor.