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

Fig 1: Identifying FSE 12 Wiring Harness

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

1.1 Remove MOST connector (41) from standard radio connector and install in radio adapter connector (40) on FSE 12 wiring harness (if installed).
Risk of breakage! Do not kink optical waveguide, route over sharp edges or bend in radii smaller than 25 mm. Tensile forces on inserts must not exceed 65 N. Do not squeeze fiber optical cable and do not compress with clamps or tie straps.

Fig 2: Identifying MOST And Radio Adapter Connectors
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
2 Connect standard radio connector (42) to radio adapter plug (39) on FSE 12 interface wiring harness (3).
3 Connect radio adapter connector (40) of FSE 12 wiring harness (3) to radio (A2).
4 Route the remaining plugs and connectors of the FSE 12 wiring harness (3) through the radio recess into the right front passenger footwell.

Fig 3: Identifying Connectors Of FSE 12 Wiring Harness
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

FSE 12 wiring harness routing diagram

Fig 4: FSE 12 Wiring Harness Routing Diagram
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
5 Fasten branch-off line with interface connector (19) of FSE 12 wiring harness (3) as shown in right footwell.
The interface connector (19) of the FSE 12 wiring harness (3) may only be fastened as from a length of 250 mm (see arrow). The interface connector (19) is connected at a later stage to the hands-free system interface.
6 Fasten FSE 12 wiring harness (3) to given lines on AC housing (8) and route further into the cable duct on the right front doorsill.

Fig 5: Identifying Cockpit Voltage Distributor (CAN) Connector
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
7 Connect antenna connector (34) of retrofitted antenna line (33) with antenna plug (32) of telephone console with PSC adapter.
8 Fasten this connection using cable ties to the vehicle's wiring harness in the front passenger footwell.

Fig 6: Connecting Antenna Connector Of Retrofitted Antenna Line With Antenna Plug Of Telephone Console
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
9 The speaker branch-off line (11) and the speaker plug (1) are left on the right A-pillar.
The speaker plug (1) is connected at a later stage to the hands-free system speaker.
10 The microphone branch-off line (12) and the microphone connector (4) are initially left on the right A-pillar.
The microphone connector (4) is routed further at a later stage and connected to the hands-free system microphone.

The FSE 12 wiring harness (3) must be routed under the bracket (see arrow).

Fig 7: Identifying Cockpit Voltage Distributor (CAN) Connector
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.