Lumbar circuit, sedan for BMW 3 series F30/F31 (2011-2015)

BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/YEL WIRE DRIVER'S LUMBAR SUPPORT VALVE BLOCK (LEFT SIDE OF DRIVER SEAT BACK) DRIVER'S SEAT LUMBAR SUPPORT SWITCH DRIVER'S SEAT PNEUMATIC PUMP DRIVER'S SIDE SEAT ADJUSTMENT SWITCH BLOCK FRONT PASSENGER'S SEAT PNEUMATIC PUMP FRONT POWER DISTRIBUTION BOX (RIGHT REAR OF ENGINE COMPT) FUSE 27 PASSENGER'S LUMBAR SUPPORT SWITCH PASSENGER'S SIDE SEAT ADJUSTMENT SWITCH BLOCK RED WIRE RELAY ENERGIZED W/ ELECTRIC SEAT ADJUSTMENT W/O ELECTRIC SEAT ADJUSTMENT YEL WIRE