Page 2
The 12H4S140 Halogen/Strobe Power Supply can be
installed in many different types of vehicles. The
guidelines for the installation of this product are
written so that no matter what vehicle is being used,
the installation and operation of the unit will be simple
and straight forward.
Selecting a Mounting Location...
The following guidelines will help the installer
determine an acceptable mounting location:
•
The power supply should be mounted on a
metal surface to aid heat dissipation. Be sure
that this surface is not one that either
generates or is exposed to excessive heat
during normal operation of the vehicle.
•
Do not select a location where the unit will be
exposed to potential damage from any
unsecured or loose equipment in the vehicle.
•
Be sure the area selected will not allow the
unit to be exposed to water!
•
When routing the power supplies wires, it is
important to choose a path that will keep these
wires away from excessive heat and from any
vehicle equipment that could compromise the
integrity of the wires (ex. trunk lids, door jams,
etc.).
•
When the best mounting location has been
determined, securely fasten the unit to it’s
mounting surface using the supplied
hardware.
WARNING! The Strobe Light Power Supply is a
high voltage device. Do not touch or remove tube
assembly in strobe light head assemblies while in
operation. Wait 10 minutes after disconnecting the
unit from its power source before starting work or
troubleshooting on power supply or system.
Caution: As it will be necessary to drill holes into
the mounting surface, the installer MUST be sure
that no vehicle components or other vital parts
could be damaged by the drilling process. Check
both sides of the mounting surface before drilling
begins!
Mounting your 12H4S140...
1. Position the 12H4S140 in its proposed mounting
location to ensure that it fits properly. With the unit
in place, insert an awl or other suitable tool into
the mounting screw area of the power supply and
scribe the areas to be drilled.
2. Remove the unit from its mounting area and,
using a drill bit sized for a #10 sheet metal screw,
drill a hole in each of the areas scribed in the
previous step.
3. Return the power supply to its mounting location
and using the supplied #10 sheet metal screws,
mount the unit onto its mounting surface.
Wiring your 12H4S140...
1. Locate the 2 screw terminals on the strobe end of
the 12H4S140. Using appropriately sized,
customer supplied wires and connectors, connect
the NEGATIVE (-) terminal to the vehicles chassis
ground. This is typically adjacent to the
NEGATIVE (-) battery terminal (see table on page
3 for wire sizing guidelines).
WARNING! All customer supplied wires, that
connect to the positive (+) terminal of the battery,
must be sized to supply at least 125% of the
maximum operating current, and fused “at the
battery” to carry the load!
2. Connect the POSITIVE (+) terminal to a fuse
block (customer supplied) and then to the
POSITIVE terminal on the battery. There should
not be more than two (2) feet of wire between the
fuse block and the battery terminal.
Note: Although a 50 amp fuse (customer
supplied) is required to be used in the fuse block,
do not install the fuse until
all
wire connections
are completed.
3. Refer to diagram on page 3 for wiring information
for control input wire functions.
4. Refer to the following page for dip switch
functionality information.
