61 12 210 Replacing wiring harness in left or right rear door (long version)

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Necessary preliminary tasks:

Close rear side window completely
Disconnect BATTERY NEGATIVE CABLE
Remove REAR DOOR TRIM PANEL
Remove SOUND INSULATION IN REAR DOOR

Disconnect plug connection (1).

Disconnect door wiring harness (2) at retainer (3).

Installation:

Make sure door wiring harness (2) is correctly laid.

Fig 1: Identifying Door Wiring Harness And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For clearer illustration, shown with front door removed.

Release screw (1), fold door wiring harness plug on B-pillar (2) downwards slightly and remove.

Unlock plug connection behind and disconnect.

Pull rubber grommet (3) in direction of arrow out of rear door (4).

Feed out door wiring harness towards front to B-pillar and remove.

Fig 2: Identifying Door Wiring Harness Plug On B-Pillar, Rubber Grommet And Screw

Courtesy of BMW OF NORTH AMERICA, INC.