I am documenting my stereo install and will post once complete but I am stuck. I am installing the Metra Axxess ASWC universal steering wheel controller. The instructions make it clear that the ASWC red and black go to ground and power (when ign on). Got it. Less clear are: RED Ground Pin 6 BLACK Pin 7 WHITE Pin 8 Anyone installed one of these that can make it more clear what to connect to what after red and black?