Okay, I got the gauges hooked up. The blue low side went on rough but got it on after a little wiggling.

Ran the car and started it up, opened the valves. Let my car run on full cooling for a few minutes. Neither gauge moved. Both sat at 0. Pretty sure everything was hooked up correctly....this time.

Does my compressor need to be working in order to register pressure? Or is there another reason why nothing registered?

Thanks!