Retrofit telephone wiring harness - AN82.70-P-0002-03B

Model 210.0 as of 1.7.98 up to 30.6.00 

1. Prepare CTEL wiring harness (2) as shown in figure.

   Connection diagram for telephone 

   Fig 1: Telephone Wiring Harness Diagram

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
2. Route wiring harness (2) along existing leads in the vehicle as shown in figure.
   Fig 2: Identifying Telephone Wiring Harness

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3. Route CTEL wiring harness (2 ) starting at the trunk along existing leads in vehicle as shown in figure.
   Fig 3: Identifying Telephone Wiring Harness Components

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4. Connect brown lead to ground (left taillamp in trunk) (W6/1).
   Fig 4: Identifying Brown Lead To Ground

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5. Route branch-off line to rear fuse box (F4).
6. Connect red/pink (rt/rs) lead, terminal 30 to fuse 15.
   Fig 5: Identifying Rear Fuse Box

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7. Solder blue/black (bl/sw) lead of wiring harness in wiring duct on left B-pillar to blue/black (bl/ sw) lead of optical wave guide wiring harness (1) with solder connector.
   Fig 6: Identifying Connector Sleeve, D2B Wake-Up Signal (Optical Networking)

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8. Route branch-off line from wiring harness (2) to roof antenna connector (A2/22x1) at left C-pillar and fasten in place using adhesive felt (arrow).
   Fig 7: Identifying Branch-Off Line From Wiring Harness To Roof Antenna Connector

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9. Route branch-off lines from wiring harness (2) to center console as shown in figure to cable duct below seat.

   When installing the portable CTEL holder in the armrest, the branch-off lines for the CTEL handset (A34) and handset transmitter and receiver connector (X39/5) remain in the lower center console area.

   When installing the portable CTEL holder at the right of the center console, the two branch-off lines must be routed to the radio recess. Depending upon the mounting console used, the branch-off lines are routed to the right below the installation console.

   Fig 8: Identifying Branch-Off Lines From Wiring Harness To Center Console

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10. Route branch-off line from wiring harness (2) to microphone separation point (X58/3) in area of the left A-pillar.
11. Connect microphone extension line (3) and route it along the A-pillar to the overhead control panel.

    Tie back any excessive lengths in the left cable duct.

    Fig 9: Identifying Microphone Extension Line

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12. Extend black/pink cable (sw/rs) if required by approx. 1 m, fit cable terminal to it and then route to the fuse and relay box (F1). Connect black/pink (sw/rs) cable to fuse 23 (terminal 15R).
    Fig 10: Identifying Fuse And Relay Box

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