Motorola WIRELESS CAR KIT WITH BLUETOOTH HF850 Manual page 17

The best location for the Bluetooth junction box is under
the dash. The box must be protected from dirt and
moisture and have adequate space for cooling and to
allow for cable connection.
For optimal Bluetooth performance, mount the junction
box so that the side with the barcode faces away from
the mounting surface.
The location MUST NOT interfere with the vehicle's air
bag deployment.
Installing the Power Cable and Fuse Kit
Caution: Failure to follow these steps may cause the
accessory not to work properly and may cause damage
to the car kit.
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