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

Expose connector for telephone handset (A34) in radio shaft.

Fig 1: Identifying Telephone Handset Connector (A34)
Connect connector (8) to interface (4).
Connect antenna for telephone handset (A34).
Connect connection line (5) to interface (4).

Fig 2: Identifying Connector, Connection Line & Interface
Apply special glue to rear of microphone (arrow) and glue hands-free system microphone (B25) included in installation kit to headliner.
Align microphone so that pickup opening points towards driver.

Fig 3: Locating Rear Of Microphone & Hands-Free System Microphone (B25)
Glue microphone lead behind headliner as shown in figure and along right A-pillar below instrument panel to radio shaft.
Connect all control and operation modules and connect battery for checking proper function of telephone.
Avoid error messages from unconnected control modules.

Fig 4: Locating Microphone Lead Behind Headliner
Insert test telephone in portable cellular telephone holder and set microphone sensitivity with "Micro" adjustment screw (arrow) on interface box (4).
Adjust so that feedback and whistling are not audible and the volume is optimum for speaking and listening.
Disconnect battery again.

Fig 5: Identifying Microphone Sensitivity Adjustment Screw & Interface Box
Fasten interface box (4) and connection leads at rear in radio shaft as shown in figure with double-sided adhesive tape.

Fig 6: Identifying Interface Box