Installation
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installed where you might come in contact with it in the event of an 
accident or collision.
If the display of a mobile device is to be used, ensure that the device 
is mounted in a holder and that the device display is clearly visible to 
the user.
• Your service technician or dealer may be able to provide you with 
information on alternatives for mounting the equipment suitably in 
your vehicle without requiring bore holes.
• Do not smoke when working on the car. Ensure that there is no 
source of fire or flame nearby.
• Take care not to cause damage to electrical cables, fuel or brake 
lines, or safety equipment during installation work.
• RF signals may affect improperly installed or inadequately shielded 
electronic systems in motor vehicles such as electronic fuel injection 
systems, electronic antiskid (antilock) braking systems, electronic 
speed control systems, and airbag systems. If you notice a fault or 
change in the operation of such a system, contact your car dealer.
• Ensure that cables are placed so that they will not be subject to 
mechanical wear and tear (for example, not laid under car seats or 
over sharp edges).
■ Integration with a car radio system
The car kit can be connected to a car radio system in three different 
ways. Select the appropriate option according to the parts supplied in 
the sales package.
For information about the connectors on the hands-free unit HF-23, see 
“Hands-free unit HF-23”, p. 39.
You can connect the car kit to a loudspeaker with an impedance of at 
least 2 ohms. The optimal impedance for the car kit is 4 ohms. If the 
impedance is over 8 ohms, the output power is significantly lower than 
normal.