constant +12v ..................... orange
accessory +12v ................... yellow
ground ............................... black
dimmer ............................... grey

front left speaker (+) ............ tan
front left speaker (-) ............. light grey
front right speaker (+) ........... light green
front right speaker (-) ........... dark green

rear left speaker (+) .............. brown
rear left speaker (-) .............. yellow
rear right speaker (+) ............ dark blue
rear right speaker (-) ............. light blue