Car Wiring Diagrams for Lumbar circuit, coupe for BMW 4 series F32/F33 facelift (2017-2020)

BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/YEL WIRE DRIVER LUMBAR SUPPORT VALVE BLOCK DRIVER'S SEAT BACKREST WIDTH ADJUSTMENT VALVE BLOCK DRIVER'S SEAT LUMBAR SUPPORT SWITCH DRIVER'S SEAT PNEUMATIC PUMP DRIVER'S SIDE SEAT ADJUSTMENT SWITCH BLOCK FRONT PASSENGER LUMBAR SUPPORT SWITCH FRONT PASSENGER LUMBAR SUPPORT VALVE BLOCK FRONT PASSENGER SEAT BACKREST WIDTH ADJUSTMENT VALVE BLOCK FRONT PASSENGER SEAT PNEUMATIC PUMP FRONT PASSENGER SIDE SEAT ADJUSTMENT SWITCH BLOCK FRONT POWER DISTRIBUTION BOX FUSE 27 LEFT FOOTWELL) RED WIRE RELAY ENERGIZED W/ ELECTRIC SEAT ADJUSTMENT W/O ELECTRIC SEAT ADJUSTMENT YEL WIRE