i have a plug on my LS1 harness and i cant figure out where it goes!! its teh closest plug to the PCM, (maybe about 8 inches away) and is a 3 pin connector in a pyramid formation, with a purple insulator.
where does it go?

 

A/C sending unit ? (On the hard line by the pass strut tower) ?

Just a guess... Not close to my car to look...

Rob (Bad30th)

 

goes to the a/c pressure switch right there by the hood shock

 

a/c pressure switch huh? well.. this is going into my rx7 so i guess that explains why i couldnt figure out where i went. does the circuit need to be completed in for the a/c to work (ie, will the PCM engage the compressor with this uinplugged)? i'm jury-rigging a setup using all rx7 a/c parts, but with the ls1 compressor.

 

If your wiring it up yourself just put the compressor on a switch.

 

i had it all figured out until this plug came along- i just need to know if leaving it hanging there will disable the a/c.
right now, i have the a/c request wire from the pcm wired to my stock rx7 a/c button. figured that was all i needed.

 

ya it needs to see pressure in order to turn o the compressor. so yes with out it its disabled