replaced radiator, now AC doesn't work

[sdave720]

Hi guys,
New to the forum, I bought a 2005 pathfinder this winter. been reading through some forum topics and folks here really know their stuff! I'm hoping that you guys can give me some pointers.
I was worried about the problem with the radiator leaking fluid into the transmission so I bought a spectra radiator to replace it with. I pulled the radiator and was surprised to see that the previous owner had already replaced the old radiator with the exact same model I bought. so...I put everything back together but now my A/C doesn't work. I plugged the fan and the pressure switch back in, but the A/C compressor won't engage.
I hooked up pressure gauges to high and low side, both sides read 80psi.
not really sure where to go from here to track down the source of my problem. it worked fine before I started messing with the radiator.

[fueler]

Did you touch the AC condenser when removing radiator? AC condenser is attached to radiator in this model, no?