32
Installation of the hands-free car kit
The two ‘Phone-In’ cables are marked accordingly and must be plugged into the appropriate
connections on the radio (blue, green or yellow). In this regard, please refer to the instructions
concerning the connection configuration of your car radio in your car radio handbook. In lots of
radios, the volume level (feedback of your conversation partner) can be controlled via the phone
input and the selection of the loudspeaker.
Different connections of the ISO plug on the radio
The layout of the pins on the ISO plug used in a car depends on the type of car. Before using the
switchbox, you should make sure that the connections are correct in order to prevent possible
damage to the device.
Configuration I
If the assignment of pin 7 of the ISO plug is connected to the DC Power Supply, and pin 4 is
connected to the ignition, you should check if the connection looks like the connection presented
on the drawing below.
Switchbox
Vehicle
red
7 (red)
blue
4 (blue)
