I'm replacing the stock stereo in my 2006 Chevy Colorado. All of the diagrams I've seen online show that A1-A7 are unused example but A1 and A2 have a similar, smaller wire (see picture).
The adapter that came with my new stereo has four wires for power, IGN+, REM+, B+, and GND-. I don't see where to put these two purple wires from A1 and A2.
New stereo diagram. [![enter image description here]]