8
PRECAUTIONS
• After installation and wiring, always check the normal
operation of other electrical equipment before driving.
• Make sure that no wires interfere with driving
or getting in and out of the vehicle.
• Insulate all exposed wires to prevent short-circuiting or electric shock.
• Do not operate the unit for prolonged periods with the engine
off. Prolonged operation with the engine turned off will drain
the battery.
• To prevent accidents, keep the volume of your radio at a level
that allows you to hear outside noises such as emergency
sirens and train crossing warnings. Prolonged exposure
to high volume levels may also result in hearing loss.
• This unit requires 12 volts to both the red and yellow power leads.
The unit will not work without 12 volts to both of these leads.
• Disconnect the negative (-) battery cable before beginning
the installation. Verify the battery ground by checking that
one wire is connected to the vehicle’s starter mounting bolt
or engine block and the other to the vehicle’s chassis using
at least 8 gauge wire. Make sure the alternator or generator
connections are secure and free from corrosion or dirt.
• This unit is designed for operation with a negative ground 12 volt
DC battery system. Do not operate this unit with other battery
systems, especially an 18 or 24 volt DC or a positive ground system.