Specifications

13
SIREN
Mounting
-
Mount the siren in such a position to give good radiation of sound to
the atmosphere when the bonnet is closed. However, this can be difficult in modern
cars today where the engine bay is particularly full. Then it may be a case of
th
inking laterally. Perhaps the siren could be mounted between the inner metal
guard and the plastic inner guard, providing there is adequate sound dispersion.
Sometimes if you remove the battery and it’s box you can fit the siren underneath.
Take care that
the siren is not exposed to extreme heat such as is found close to
turbo chargers and exhaust systems.
Also, keep the siren away from possible damage from water which may splash up
from the road and fill the horn cavity of the siren. If you think there m
ay be a chance
that water will reach the siren try drilling a small hole in the centre of the horn to
allow the water to drain out. Many a time a car has come into a workshop with a
quiet siren, only to find that the horn was full of water.
Battery back
-
u
p sirens need to be mounted in such a way as to allow the owner of
the vehicle access to turn on/off the siren
if it is of the key type, otherwise it may
be hidden
.
Take care that the siren is not easily accessed from under the vehicle by a would
-
be thief who would try to cut the wires going to it.
Wiri
ng
-
Connect the earth wire from the siren to a factory earth bolt, or by a
separate screw to the chassis using a star washer to ensure good contact to
ground.
Never attach the earth wire to the siren bracket because if the siren becomes
loose a battery
back
-
up siren would start to sound while the owner is driving
down the road.
Once again, conceal the wires going to the siren with looming tape or convoluted
tubing and route the wiring with the pin switch wire loom to the firewall, using cable
ties to s
ecure. Also, tape over any plugs to prevent moisture damage to the
connectors.