Product description
Universal ISO adapter for car audio, 2× ISO female to open end.
Black connector = power
1 - Not used
2 - Mute
3 - Not used
4 - 12 V + constant (memory backup for the stereo)
5 - 12 V + output (e.g. control signal to amplifier)
6 - Button illumination (rarely used)
7 - 12 V + from ignition (powers the stereo)
8 - Ground (earth)
Brown connector = speakers
1 + 2 - Right rear
3 + 4 - Right front
5 + 6 - Left front
7 + 8 - Left rear
