Smart Fortwo II (2007-2015) Premium radio circuit, with amplifier

1 2 3 4 USB GND USB- USB BUS USB+ 1-2, 3-4, 5-6, 7-8) 20 19 18 LIN IN LIN GND SHIELD 4 3 2 1 USB CONNECTION CONNECTOR (W/ EXTERNAL AUDIO SOURCE) ANT SHIELD SHIELD BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/PNK WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE ESP CONTROL UNIT (LEFT CENTER OF VEHICLE UNDERCARRIAGE) EXTERNAL AUDIO SOURCE SEPARATION POINT (IF EQUIPPED) FUSE 15 FUSE 20 GPS ANTENNA (CENTER OF DASH) GRN WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE HAS HOT AT ALL TIMES HOT IN ON OR START LEFT DOOR SOUND SYSTEM TWEETER LEFT DOOR SOUND SYSTEM WOOFER LEFT REAR SPEAKER LEFT TWEETER NCA WIRE PARK SW PARKING BRAKE INDICATOR SWITCH (BASE OF PARKING BRAKE LEVER ASSEMBLY) PNK WIRE RADIO ANTENNA RED WIRE RED/BLU WIRE RED/GRY WIRE RED/YEL WIRE RIGHT DOOR SOUND SYSTEM TWEETER RIGHT DOOR SOUND SYSTEM WOOFER RIGHT REAR SPEAKER RIGHT TWEETER SAM CONTROL UNIT (UNDER LEFT SIDE OF DASH) SHIELD SIG SMART PREMIUM RADIO SOUND AMPLIFIER (RIGHT END OF DASH) SUBWOOFER TRANSMISSIONS SYSTEM VIO WIRE W/ ECE W/O ECE WHT WIRE YEL WIRE YEL/BRN WIRE YEL/WHT WIRE