Code 3 21TR & 21TR Plus - Manual (Page 5)

5
wiring Instructions
Before attempting to connect wiring refer to wire tag attached to the lightbar's main cable. Each wire in the cable controls a separate
lightbar function as described in the wire tag.
Larger wires and tight connections will provide longer service life for components. For high current wires it
is highly recommended that terminal blocks or soldered connections be used with shrink tubing to protect
the connections. Do not use insulation displacement connectors (e.g. 3M ® Scotchlock type connectors).
Route wiring using grommets and sealant when passing through compartment walls. Minimize the number
of splices to reduce voltage drop. High ambient temperatures (e.g. underhood) will significantly reduce the
current carrying capacity of wires, fuses, and circuit breakers. Use "SXL" type wire in engine compartment.
All wiring should conform to the minimum wire size and other recommendations of the manufacturer and
be protected from moving parts and hot surfaces. Looms, grommets, cable ties, and similar installation
hardware should be used to anchor and protect all wiring. Fuses or circuit breakers should be located as
close to the power takeoff points as possible and properly sized to protect the wiring and devices. Particular
attention should be paid to the location and method of making electrical connections and splices to protect
these points from corrosion and loss of conductivity. Ground terminations should only be made to sub-
stantial chassis components, preferably directly to the vehicle battery. The user should install a fuse sized
to approximately 125% of the maximum Amp capacity in the supply line to protect against short circuits.
For example, a 30 Amp fuse should carry a maximum of 24 Amps. DO NOT USE 1/4" DIAMETER GLASS
FUSES AS THEY ARE NOT SUITABLE FOR CONTINUOUS DUTY IN SIZES ABOVE 15 AMPS. Circuit
breakers are very sensitive to high temperatures and will "false trip" when mounted in hot environments or
operated close to their capacity.
wARNING!
Routing
Route the wiring cables into the engine or passenger compartment, taking care to use grommets and to apply sealant around openings
to keep water out. It is advisable to leave an extra loop of cable when installing the light bar to allow for future changes or reinstallations.
Connect the black lead to a solid frame ground (earth), preferably, the (-) or ground (earth) side of the battery and bring the other wires
to the control head or switches. Connect the wires as directed by the wiring instructions on the cable.
!