02-11-2009
It’s in the middle of winter and I finally got around in getting my AC compressor installed. Luckily, I had some spare time and it’s been 60degs for a couple of days (not 20-30degs like last week).
For those doing the swap on 1987-1989 MM/D50 just use the same AC that came with the truck. Just swap the AC compressor/alternator bracket on the motor. I don’t have any info for those swapping the 2.6 from the 2.0.
On my 1990 MM/D50 2.4 to a 2.6 turbo swap, I used the 2.4 AC compressor on the Starion 2.6 motor. In order to mount the AC compressor onto the Stariont 2.6 you will need to use the AC compressor/alternator bracket from a 87-89 2.6L MM/D50. The Starion bracket can’t be used, since the AC compressor mounts differently.
Before mounting the MM/D50 2.6 AC compressor/alternator bracket, cut the bottom tab off.

Here’s the AC compressor installed into the 87-89 AC compressor/alternator bracket, but you notice the pulley doesn’t line-up.

Brackets will need to be made to move the AC compressor back about 1” so the pulleys will line up.
Here’s the lower bracket I made bolted to AC compressor bracket.

And here is the AC compressor installed with the upper bracket shown.

On my swap I ended up with one electrical plug to deal with to wire up the AC. It's a BLUE plug with 3 wires: Blue, Green w/ red stripe, and White w/ black stripe. 1990 FSM labels it as plug A-38. (Note: 1991-96 maybe different) The White/Black wire is connected back to the fusible link or any +12V source. The Green/Red wire (which originally went to the 2.4 ecu) is grounded. The Blue wire (which also originally went to the 2.4 ecu) is wired to the AC switch. I "T" into the Blue/Black wire coming from the AC switch. You should be able to access the AC switch wiring plug thru the glove box.
Here's a wire diagram of my AC wiring hookups.

07-11-09
Scored a Delta lockable storage/tool box on craigslist for only $10. Cleaned the inside of the box and mounted to the bed.
