Code 3 SuperVisor TL for 2007 Ford Expedition - Manual (Page 5)

4 5
wiring Instructions
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 substantial 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!
FIgURE 17
Routing The Cable
Route the wiring cable into the passenger compartment down the door post as shown in Figure 17 (passenger side shown) or as
otherwise desired (As stated before in the "Note" in Step 4 the cable can also be routed up above the headliner across
and down behind the plastic corner door post covers and under the dashboard. Refer to the service manual for the Ford
Expedition for detailed instructions as to how to remove the door post cover for access to route the cable). It is advisable to
leave an extra loop of cable when installing the light bar to allow for future changes or reinstallations.