The AC compressor wires run down the "frame rail" and up to the compressor. The Alt wire runs down in the same area as the injector wires on that side.
I'm not sure if I remember right.. but didn't GM swap sides with the A/C compressor and alternator some year?
EDIT: Oh yeah... and yes, that is one of the larger aluminum radiators. That's why I had to fab up custom brackets.
