Retrofit grounding cable for the rear light on the right and left (to 10/2016) (2016-2022)

Socket housing (1): Version until 10/2016

Socket housing (2): Version from 10/2016 with additional ground (3)

Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary work: 

• REMOVE THE SOCKET HOUSING FOR THE REAR LIGHT ON THE LEFT AND RIGHT .

Comply with notes on HANDLING WIRING HARNESSES .

Unpin the 8-pin connector (1) from the vehicle wiring harness:

• Open the secondary lock (2) with a suitable tool (e.g. small screwdriver) on the top and bottom.
• Use a suitable tool (such as a small screwdriver) to carefully push the primary locking device down as shown by the arrow.
• Pull all cables out.

Courtesy of BMW OF NORTH AMERICA, INC.

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect the pin of the brown grounding cable (4) from the vehicle wiring harness (5).

Strip the insulation off the brown grounding cable (4) from the vehicle wiring harness (5).

Slide heat-shrink tubing (1) from the repair kit onto the double grounding cable (2).

Crimp the vehicle grounding cable (4) and the single grounding cable (6) from the repair kit with a butt connector (3) with the double grounding cable (2) from the repair kit.

Position the heat-shrink tubing (1) in the center over the butt connector (3).

Shrink the heat-shrink tubing (1) with a hot air blower at 400°C. Use a heat-shrink tubing reflector.

Secure the grounding cables on the vehicle wiring harness with adhesive tape (1) as shown.

Pin the cable to the 8-pin new connector  from the repair kit as follows:

Courtesy of BMW OF NORTH AMERICA, INC.

Pin	Rear light, left	Rear light, right
1	grey/blue	black/grey
2	grey/violet	grey/yellow
3	grey/yellow	grey/black
4	black/white	grey/blue
5	yellow/black	grey/pink
6	Brown	black/blue
7	black/yellow	Brown
8	grey/pink	yellow/violet

Connect both plug connections.

INSTALL THE SOCKET HOUSING FOR THE REAR LIGHT ON THE LEFT AND RIGHT .

Courtesy of BMW OF NORTH AMERICA, INC.