Ground Information - Uniden Bearcat PC78LTD Owner's Manual

This transceiver may be installed and used in any 12-volt DC negative
ground system vehicle.

Ground Information

Most newer U.S. and foreign made cars and small trucks use a negative
ground system. Some older cars, and some new large trucks, use a
positive ground system.
With a negative ground system, the negative (-) battery terminal is
usually connected to the vehicle motor block. If you cannot determine
the polarity system of your vehicle, contact your vehicle dealer for
information.
Negative Ground System
For negative ground systems, 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.
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