OK finally got mine installed, programmed, and hidden. Follow the instructions for: Pontiac (all with airbag, w/o heater controls, 21 pin connector), as stated by a kind fellow already, youll be looking for pin 13 a light green wire. Use the interface'* green wire to connect to the light green pin 13. Interface vers. 1, do not clip brown OR purple jumpers, manufacturer reccomends using a fresh chassis ground instead of sharing the radio harness ground.
Anyhow, its all good. Nice to have my conrols back!