Sweet. Always feels good to figure this crap out.

For future reference, this is what I did/have; JVC radio, Metra wiring adapter and ASWC controller.

On the ASWC controller:
pin 12, red --> to red wire of Metra harness (switched 12v)
pin 6, black --> to black wire of Metra harness (ground)
pin 3, orange/green --> to blue wire of factory harness (steering wheel controls)
3.5mm plug --> to 3.5mm plug on JVC radio

The controller auto programmed in just a few minutes.