Today, I went out to the garage to find a coolant leak here.
SANY0952.jpg

I fixed that, then started the engine to charge the air conditioning.

Oddly, the compressor would only run if I stuck jumpers in BOTH the high and low pressure switches. Anyone know how that works?

After two cans of R-134a had been sucked into the system, my vent temps weren't moving. I shut the engine off and heard a hissing sound.

I traced it to here.
SANY0953.jpg

Tightened it until the hissing stopped. Coincidentally, the nut wouldn't move anymore, either.

Pulled a vacuum again.

After pulling a vacuum for five minutes:
SANY0959.jpg

After sitting for 45 minutes:
SANY0961.jpg

Rage.