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Home >> Mercedes Benz >> 2020 >> SLC43 AMG Base >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Electrical System - Body - 172 Chassis - 4 Of 5 >> Retrofitting & Conversion >> Retrofit Universal Media Interface Adapter Wiring Harness - AZ82.85-P-0004-02W

Retrofit Universal Media Interface Adapter Wiring Harness - AZ82.85-P-0004-02W

MODEL 172.### 1# 

Fig 1: Identifying Long Wedge (115 589 03 59 00)
G11128618Courtesy of MERCEDES-BENZ USA

Connection scheme 

G13848475Courtesy of MERCEDES-BENZ USA

Routing diagram 

G13848476Courtesy of MERCEDES-BENZ USA
  1. Wrap felt tape around branch-off line of center instrument panel speaker (a) of the Universal Media Interface adapter wiring harness (3).
    G07072330Courtesy of MERCEDES-BENZ USA
  2. Connect black 44-pin plug (6) of Universal Media Interface adapter wiring harness (3) to black 44-pin coupling (7) of vehicle wiring harness.
  3. Remove black, 2-pin coupling for optical fiber (11) from black, 44-pin coupling (7), and install in black, 44-pin coupling (4).

    IMPORTANT Only for vehicles with  one of the following codes:

    • Code (518) Media interface
    • Code (810) Sound system
  4. Route Universal Media Interface adapter wiring harness (3) to left lower radio recess.
    G13848478Courtesy of MERCEDES-BENZ USA

    IMPORTANT The black, 44-pin coupling (4) is connected to the radio at a later stage. The Universal Media Interface adapter wiring harness (3) obstructs the installation of the radio because of its size.

    The radio can only be installed if the Universal Media Interface adapter wiring harness (3) is as low down as possible in the rear area of the radio recess.

  5. Route white, 32-pin coupling (5) of Universal Media Interface adapter wiring harness (3) into the front passenger footwell.

    IMPORTANT The white, 32-pin coupling (5) is connected to the Universal Media Interface control unit at a later stage.

    G13848479Courtesy of MERCEDES-BENZ USA
  6. Unclip covering of instrument panel center speaker (H4/27) carefully using SPECIAL TOOL long wedge.
  7. Remove covering of instrument panel center speaker (H4/27).
  8. Unclip center instrument panel speaker (H4/27)

    IMPORTANT On vehicles with  code (810) Sound system.

  9. Route black 2-pin plug (10) and black 2-pin coupling (9) of Universal Media Interface adapter wiring harness (3) to installation location of instrument panel center speaker as shown.
    G13848480Courtesy of MERCEDES-BENZ USA
  10. Detach black, 2-pin coupling (8) from center instrument panel speaker (H4/27).

    IMPORTANT On vehicles with  code (810) Sound system.

  11. Route black 2-pin plug (10) and black 2-pin coupling (9) of Universal Media Interface adapter wiring harness (3) out of opening at the instrument panel.
    1. 12.1 Connect black 2-pin plug (10) to black 2-pin coupling (8) of vehicle wiring harness.

      IMPORTANT On vehicles with  code (810) Sound system.

    2. 12.2 Strap down black 2-pin plug (10) to branch-off line of Universal Media Interface adapter wiring harness (3) and wrap with felt tape.

      IMPORTANT In vehicles without  code (810) Sound system.

      G13848481Courtesy of MERCEDES-BENZ USA
  12. Connect black 2-pin coupling (9) to instrument panel center speaker (H4/27).
  13. Clip in center instrument panel speaker (H4/27)

    IMPORTANT For vehicles without  code (810) Sound system, the instrument panel center speaker (H4/27) has to be retrofitted.

  14. Install covering of instrument panel center speaker (H4/27).
G13848481Courtesy of MERCEDES-BENZ USA