-12-
Electrical Connections
Wire Size and Termination
The wiring diagrams on pages 14 and 17 show the minimum wire size used for
each connection, along with recommended lead color. If the wire is longer
than 10 ft., use the next larger wire size. Use only high quality crimp
connectors. Make sure all connections are tight. Route wiring to prevent wear,
overheating, and interference with air bag deployment. Use grommets and
sealant when passing through compartment walls. Minimize the number of
splices to reduce voltage drop. Ground connections should only be made to
substantial chassis components, preferably directly to the negative of the
vehicle battery. Install and check all wiring before connection to vehicle
battery.
SEE THE TABLE BELOW FOR CORRECT WIRE SIZING!
RECOMMENDED WIRE SIZE - AMP CAPACITY &
CONSTRUCTION
Ampacity Range
SAE Wire Size
Gauge/No. of Strands
5A - 10A
#16
29/19
10A - 15A
#14
27/19
15A - 30A
#12
25/19
30A - 40A
#10
23/19
40A - 50A
#8
21/19
All conductors should be constructed of stranded copper with thermoplastic insulation.
CAUTION: All wires should be rated for at least 125% of their maximum current load.
All wires connected to the positive terminal of the battery should be fused at the battery
for their rated load.
The load can be calculated by adding all lamp wattages and dividing by
13. Load (Amps) = Total Watts / 13 volts. Do not use 1/4" diameter glass fuses, as they are
not suitable for continuous duty above 20 amps.
SIREN AMPLIFIER
Siren electrical power
connections to the amplifier
are made using a removable
connector located on the
back of the amplifier case.
Communication between the
control head and the
amplifier are made via a
communications cable with
an RJ11 jack.
CAUTION: Please note that this
cable IS NOT a standard telephone
cord and CANNOT be replaced with one.
You should make all electrical
connections to the power connector before installing the connector on the unit.
If the unit needs service, both the communication cable and the power
connector can be easily removed without unwiring the connector.
