Backup lamps circuit for Porsche Boxster 987 facelift 2 (2009-2012)

17 22 BATT (RIGHT) BACKUP LIGHT 2 8 11 CAN HIGH CAN LOW GND 3 6 BATT GND 37 38 40 CAN HIGH CAN LOW BACKUP LIGHT SWITCH ANTI-DAZZLING INTERIOR MIRROR BACKUP LIGHT BACKUP LIGHT SWITCH (TOP RIGHT OF TRANSMISSION) BATT (LEFT) BLK WIRE BLK/BLU WIRE BLU WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CURRENT DISTRIBUTOR (BEHIND RIGHT SIDE OF DASH) EMERGENCY POWER PIN (UNDER LEFT SIDE OF DASH, AT KICK PANEL) EMERGENCY POWER SUPPLY RELAY FUSE FUSE HOLDER A GRN WIRE HOT AT ALL TIMES LEFT TAILLIGHT ASSEMBLY NCA WIRE POWER DISTRIBUTION SYSTEM REAR CONTROL UNIT (UNDER LEFT SEAT) RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RIGHT TAILLIGHT ASSEMBLY VEHICLE ELECTRICAL SYSTEM CONTROL UNIT YEL WIRE