Retrofit hands-free system wiring harness - AZ82.70-P-0005-02PPD

With radio 

1. Expose connection for telephone handset (A34) in radio recess.
2. Connect antenna for the telephone handset (A34) to the antenna line of the PSC adapter.

   Use the antenna adapter enclosed if necessary (depends on the vehicle version).

   Fig 1: Identifying Telephone Handset Connection

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
3. Connect VDA connection line (5) to the interface box for the hands-free system (3).
   Fig 2: Connecting VDA Connection Line To Interface Box For Hands-Free System

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
4. Route the connection line (5) from the interface box of the hands-free system (3) as per the Figure to the exposed CTEL separation point (X39/37) into the radio recess and connect.

   Fasten wiring harness with adhesive felt.

   Fig 3: Identifying CTEL Separation Point Into Radio Recess

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
5. Disconnect series coupling of chamber A and B at the radio and connect to the wiring harness for the voltage supply (20) Connect intermediate coupling from the wiring harness for voltage supply (20) to the radio.

   The VDA connection line (5) is connected to the voltage supply wiring harness (20).

   Fig 4: Identifying VDA Connection Line

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
6. Prepare CAN wiring harness (4) as shown in the Figure.
   Fig 5: CAN Wiring Harness Diagram

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
7. Connect CAN wiring harness (4) to ICANI box (2) and connect the ICANI connection coupling (7) to the free coupling of the interface box for the hands-free system (3).
8. Route CAN wiring harness (4) to the radio and fasten with adhesive felt.
   Fig 6: Connecting CAN Wiring Harness To ICANI Box

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
9. Disconnect the standard production coupling of chamber C to the radio (A2) and connect to plug (11) of the CAN wiring harness (4). Connect intermediate coupling for the radio (A2) from the CAN wiring harness (4) to the radio.
   Fig 7: Identifying CAN Wiring Harness

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
10. Connect microphone wiring harness (22) to the connection coupling (MIC) in the radio recess and route under the glove box to the right A-pillar and from there upwards to the roofliner and fix in position with adhesive felt
    Fig 8: Connecting Microphone Wiring Harness To Connection Coupling

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

    

    On vehicles with head airbag when routing at the upper A-pillar it should be ensured that the routing ensues in front of the tensioning strap of the head airbag (towards the windshield)

    Fig 9: Identifying Wiring Harness

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
11. Stick microphone (6) as shown in the figure to the mirror base with double-sided adhesive tape (contained in the parts kit) and connect.

    Align microphone so that pickup opening points towards driver.

    Fig 10: Identifying Microphone

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
12. Connect hands-free speaker (21) of the attachment console at the connection plug (SP)
    Fig 11: Connecting Hands-Free Speaker Of Attachment Console

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.