Retrofitting voice control system wiring harness - AN82.70-P-0001-01A

Modify telephone/voice control system wiring harness (1) as illustrated
Connection diagram of telephone/voice control system wiring harness

Fig 1: Voice Control System Wiring Harness Diagram
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Run telephone/voice control system wiring harness (1) as illustrated along existing wiring in vehicle.
Connection diagram of telephone/voice control system wiring harness

Fig 2: Identifying Run Telephone/Voice Control System Wiring Harness
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Run telephone/voice control system wiring harness (1) from the interior of the vehicle on the left as illustrated into the trunk.

Fig 3: Identifying Run Telephone/Voice Control System Wiring Harness
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Connect brown cable to ground, left tail lamp in trunk (W6/1).

Fig 4: Identifying Tail Lamp In Trunk
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Position branches to the telephone/voice control system transmitter/receiver (A35/10) in the left of the trunk at the wheelhousing.
Run red/blue/purple cable below rear seat to rear fuse box (F4) and insert into fuse 15 assignment A (circuit 30 connection).

Fig 5: Identifying Rear Fuse Box
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Run cable to hands-free microphone (B25) over left C-pillar below the left headliner to the overhead operating unit. Fix cable in place behind headliner with felt.

Fig 6: Identifying Cable To Hands-Free Microphone Over Left C-Pillar
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Run antenna cable (4) to connection at roof antenna (A2/22) over C-pillar to the rear roof area and fix in place with cable straps (arrows).

Fig 7: Locating Antenna Cable
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Run telephone/voice control system wiring harness (1) in left cable duct to the driver footwell.
Strip insulation of grey/blue cable in cable duct (circuit 58 signal). Strip insulation of grey/ blue cable (a) of telephone/voice control system wiring harness (1).
Solder together grey/blue cables (a) with soldered joint.

Fig 8: Identifying Grey/Blue Cables With Soldered Joint
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Run black/yellow/green cable of telephone/voice control system wiring harness (1) as illustrated to the fuse and relay box (F1).
Run branch to voice control system (VCS) switch connector (S93/2x1) as illustrated to the connector strip below the steering column and clip into a vacant mount.

Fig 9: Identifying Voice Control System (VCS) Switch Connector
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Run yellow/black cable (b) to connection at radio wiring harness and also branch to handset (X39/5) and hands-free speaker (H4/12x1) as illustrated to the center console and fix in place with felt (arrows).
Cut through yellow/black cable of radio wiring harness about 50 mm behind radio connector A2 and strip insulation on both sides over about 15 mm.
Solder together all 3 yellow/black cables with soldered joint.

Fig 10: Identifying Radio Wiring Harness And Hands-Free Speaker
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Run branch to handset (X39/5) and hands-free speaker (H4/12x1) to the right side of the center console.

Fig 11: Identifying Hands-Free Speaker
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Connect black/yellow/green cable in fuse and relay box (F1) to fuse 23, assignment B (circuit 15R connection).

Fig 12: Identifying Fuse And Relay Box
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.