Thanks to all the great info in this thread, took me awhile but finally got my AWSC-1 working almost completely. The only thing I can't get programed properly is the phone buttons, won't register when I program.
The Metra kit for the 370z (70-7552) should really be fixed, missing so many wires including the AWSC-1 wiring and ground. For some reason my new JVC stereo was working without it being properly grounded
, fixed that and grounded the AWSC-1 to the chassis.
Also, the AWSC-1 didn't detect my stereo properly, said it was a Alpine, this is my second attempt at installing a AWSC, first time was a PITA as well.
Happy I got it working at least, info here was a big help.