Retrofit Universal Media Interface adapter wiring harness - AZ82.85-P-0004-02CX

Connection scheme 

Fig 1: Identifying Retrofit Universal Media Interface Adapter Wiring Harness - Connection Scheme

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Routing diagram 

Fig 2: Identifying Retrofit Universal Media Interface Adapter Wiring Harness - Routing Diagram

Courtesy 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).
   Fig 3: Identifying Center Instrument Panel Speaker Of Universal Media Interface Adapter Wiring Harness

   Courtesy 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).

   Only for vehicles with  one of the following codes:

   • Code (518) Media interface
   • Code (537) Digital radio
   • Code (536) SIRIUS satellite radio
4. Route Universal Media Interface adapter wiring harness (3) to left lower radio recess.
   Fig 4: Identifying 44-Pin Coupling, Plug Of Universal Media Interface Adapter Wiring Harness And Optical Fiber

   Courtesy of MERCEDES-BENZ USA

   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 automatic air conditioning control and operating unit.

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

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

6. Route black, 2-pin plug (10) and black, 2-pin coupling (9) of Universal Media Interface adapter wiring harness (3), as shown, through the cable duct of the Low Voltage Differential Signal (LVDS) display wiring harness to the installation location of the center instrument panel speaker.
   Fig 5: Identifying 2-Pin Plug And Coupling Of Universal Media Interface Adapter Wiring Harness

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7. Detach center instrument panel speaker (H4/27)

   Only on vehicles with  code (810) Sound system.

8. Detach black, 2-pin coupling (8) from center instrument panel speaker (H4/27).

   Only on vehicles with  code (810) Sound system.

   Fig 6: Identifying Center Instrument Panel Speaker And 2-Pin Coupling

   Courtesy of MERCEDES-BENZ USA

1. 9.1 Connect black, 2-pin plug (10) of Universal Media Interface adapter wiring harness to black, 2-pin coupling of vehicle wiring harness.

   On vehicles with  code (810) Sound system.

   The black 2-pin coupling was connected to the center instrument panel speaker (H4/27).

2. 9.2 Strap down black, 2-pin plug (10) and fasten using felt tape into installation opening of center instrument panel speaker (H4/27).

   In vehicles without  code (810) Sound system.

3. 10 Connect black 2-pin coupling (9) to center instrument panel speaker (H4/27).
   Fig 7: Identifying Center Instrument Panel Speaker, 2-Pin Coupling And 2-Pin Plug

   Courtesy of MERCEDES-BENZ USA
4. 11 Insert center instrument panel speaker (H4/27) into support and tighten using bolts (11).
   Fig 8: Identifying Center Instrument Panel Speaker With Bolts

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