Backup lamps circuit for Mercedes-Benz A-class W177 (2018-2023)

BL (+) BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BUL (+) CAN HMI H CAN HMI L CAN-B_H STERN CAN-B_L COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE FUSE 21 GRY/BLU WIRE GRY/YEL WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INNER LEFT REAR LAMP UNIT INNER RIGHT REAR LAMP UNIT LEFT REAR LAMP UNIT RED WIRE RIGHT REAR LAMP UNIT SAM CONTROL UNIT (RIGHT FRONT FOOTWELL) VIO/BLK WIRE W/ LED W/O LED