a/c conversion questions

[r6z4o6]

Is what i am looking at, this is GM manual for a 91 C/K.

ONE THING, there appears to be a misprint on the first pic.
Halfway down the page, to the right of connector C223 the 59 circuit appears to change to light green(I assume it should have stayed dark green) as on the next page, the wire starts out as dark green again...)

As I understand the two diagrams, when you turn key ON "A/C HTR 25 AMP"[top left, top pic] is battery voltage down to the "A/C CLUTCH RELAY [bottom middle, bottom pic]. You press a/c button on thermostatic head unit, it grounds terminal 966 on head unit [top middle, bottom pic] and closes the "A/C CLUTCH RELAY" which then makes circuit 66 Light Green wire HOT with 12 volts. That 12volts goes THRU the "A/C PRESSURE CYCLING SWITCH" (assuming it is closed due to proper charge of freon) and out the other side, the 12 volts now travels thru Dark Green wire:

1.) 12 volts goes thru "A/C COMPRESSOR CLUTCH", and out the Black go ground, which engages hte clutch.
2.)12 volts goes back through the typo mentioned earlier, to the bottom pic and into Pin 1, Circuit 59 on "A/C CONTROLLER."
3.)12 volts goes to the back of "ECM CONNECTOR, pin B8 circuit 59.

I haven't gotten this far in my conversion, else i would tell ya if it fried my PCM or not!!!

In the link i gave a post ago if you go UP a directory and hit up the "00pinpcm.htm" file, it details circuit 59 as "A/C Status Signal" which sounds exactly like what you are looking for...I wish i had a really good GM manual for the NBS PCM...*le sigh*

Pin 18 is STILL Circuit 59, and it is STILL Dk Green...I didn't stick with wrenching long enough to get my L1, but i understand self control in putting 12 volts into the computer

This link is a really good read!!!!!
Final Steps for A/C - Relay/PCM control? Electronics gurus? - LS1TECH(It has another diagram as well in teh first post)