ok so i got the brackets to mount the thirdgen a/c compressor to the ls1. now the wiring harness i had custom made for me is beautiful, but one questions i have is this. on the harness there is a wire for a/c request which i just splice into the a/c request on my car no big deal. and it has the thirdgen connector on the new harness. which i assume will engage/disengage the a/c clutch. one thing i noticed is there is no pressure switch in my new harness. could his be a possible problem? i was told that teh compressor should shut itself off when the psi is too high. true? what are your thoughts on this.

thanks i start my project this friday and i am seriously hoping only to have my car down for about 2 weeks while the swap takes place. haha at least i hope. i have everything ill need but you know how that goes. haha

 

you need either the 3rdgen type of pressure switch, to cut it on and off... or the 4thgen type of pressure sensor, feeding the PCM, so the PCM can switch it on and off..

you dont want to run without any pressure switch... the compressor is "dumb".. theres no check built into it.. and if you run it dry like that, it will fail.