July 31, 2019
12 Part#: 212-0042
Service and Maintenance
Troubleshooting
PROBLEM
POSSIBLE CAUSE
PROBABLE SOLUTION
System runs properly but shuts down
when heavy outputs are turned on.
Vehicle battery is low on
charge. Bad wiring
Recharge vehicle battery or use outputs
when vehicle is running and check the
car wiring.
Some functions do not operate proper-
ly.
Bad wiring in the car.
Ensure proper fuse rating when replac-
ing a fuse and check the car wiring.
Functions work but there is no back-
lighting, when engine is running.
No power to “12V FROM IGN”
pin.
Check 12V-ignition wire for any shorts or
improper connections.
System runs properly but shuts down
while running and starts again.
Vehicle circuit breaker not rat-
ed properly, and is overheat-
ing.
Use circuit breaker with 1.25 times the
amperage rating for full load operation.
Some functions blow the fuses every
time.
Ensure proper fuse rating and the car
wiring. Ensure load does not exceed
maximum output rating.
There is a burning smell when heavy
loads come on. Lights are dim and
wires are heating up.
Loads are exceeding absolute
maximum limits of system.
Ensure proper fuse rating and ensure
that loads are not exceeding limit of
each output.
Lights dim when another light is turned
on.
Improper wire gauge being
used on power or ground con-
nections.
Ensure that all proper wire gauge are
used for the system’s power and ground
lines.
Siren’s tone changes when another
light or heavy load comes on.
The electronics may not be
operating properly.
Ensure that all screws of terminal blocks
are tight.
While using the two-way radio, lights
come on, or function(s) is/are unstable.
Loose or poor ground connec-
tion, or improper power wiring.
Use dedicated power and ground wires
from battery to system.
Dedicate separate power and ground
wires to the radio.
The system is emitting a buzzing
sound and/or some functions are not
operating properly.
Improper or poor wiring.
Vehicle battery charge is low.
Ensure that all power and ground wiring
connections are firmly secured. Ensure
that all plugs are plugged in firmly and all
screws on the terminal blocks are tight.
Recharge vehicle battery.
Siren tone does not operate when it is
selected, but corresponding red LED
light does come on.
Possible microphone line
problem (microphone signal
over-rides all siren tones).
Fuse blown.
Ensure secure connection of micro-
phone and its extension cable
Try another microphone.
Check siren fuse.
When powering the siren on standby
mode, the siren goes on.
Horn and Horn Ring wires are
reversed.
Reverse the Horn and Horn Ring wires.
Functions work but there is no sound
output.
Poor speaker connection.
Blown speaker.
Ensure secure connection of speaker
wires.
Check and replace speaker if necessary.
All LED's are on but no functions will
operate.
System is locked up (due to a
power surge on battery boost).
Disconnect power to unit then
reconnect.
