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caution must be taken to prevent a short circuit. If in doubt, contact your
vehicle dealer for information.
Ground Information
This transceiver may be installed and used in any 12-volt DC negative ground
system vehicle.
negative ground system
With a negative ground system, the negative (-) battery terminal is
usually connected to the vehicle motor block.
Connect the red DC power cord from the
transceiver to the positive (+) battery terminal
or other convenient point. Then connect the
black power cord to the vehicle chassis or negative (-) battery terminal.
install 6-pin to 4-pin aDapter
The Bearcat 680 is pre-configured for Uniden’s new 6-pin wireless, noise-
cancelling technology, available in 2012. Your Bearcat 680 comes with an
adapter to connect the radio’s 6-pin microphone to a current standard
4-pin microphone.
1. Insert the 6-pin side of the adapter into the Bearcat 880 6-pin
microphone connection.
2. Plug a standard 4-pin microphone connector into the 4-pin side
of the adapter.
marine installation
Consult your dealer for information regarding marine istallation. It is
important to adequately ground the system and to prevent electrolysis
between the fittings in the hull and the water.
Using yoUr BearCat 680
s/rF meter
You can check your incoming and outgoing signal strength as you use
your Bearcat 680. The 12-column LCD display (refer to item number
