A/C drain line location

2007. Got wet front floors. Not the heater core, windshield etc. I've searched online. Looked under the hood but seeing anything along the firewall is blocked by the engine. Haven't climbed under but wondering if anyone knew, under the car or passenger side inside? I saw where an 08 Enclave it was inside. A TSB for 02-04 adding an elbow but they stated along the firewall.

I'll answer my own question. Only accessible from under the car. Down low towards passenger side. No room to for air compressor hose. Improvise a piece of vacuum hose pushed into the drainline then air compressor. The TSB shows attaching an elbow to the drainline.

http://i141.photobucket.com/albums/r52/aleekat/nipple_zpsstgsoihk.jpg (http://s141.photobucket.com/user/aleekat/media/nipple_zpsstgsoihk.jpg.html)