Retrofit wiring harness. - AZ82.70-P-0001-04GZ

Strap down connection contact (11) of red/black line (rt/sw) to accessory wiring harness (13) (not required).

Fig 1: Wiring Harness Connection Diagram
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Route brown line (br) from accessory wiring harness (13) as shown in picture and connect to ground, right spare tire well (W7/7).
Fasten brown line (br) to spare tire well with felt tape (15) and to vehicle's own wiring harness (16) with cable tie.
Ensure that the brown line (br) does not touch against the panel edge (see arrow).

Fig 2: Identifying Accessory Wiring Harness, Felt Tape And Vehicle's Wiring Harness
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Disconnect black, 14-pin connector P4 (17) from load compartment fuse and relay box (F4).
Connect red (rt) line from accessory wiring harness (13) to contact cavity 12 in black, 14-pin connector P4 (17) (circuit 30).
Connect black, 14-pin connector P4 (17) to load compartment fuse and relay box (F4).
Connect one white, 3-pin accessory connector (14) to illuminated door sill molding wiring harness later. The second white, 3-pin accessory connector (14) can be used for other retrofitted accessories that do not require circuit 15.
Assign a 7.5 amp fuse to fuse 47 (F4f47) in the load compartment fuse and relay box (F4) (if not yet used).

Fig 3: Identifying Accessory Wiring Harness, 14-Pin Connector P4, Load Compartment Fuse And Relay Box
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.