Whelen Engineering Company FastTrax FTR4 Installation Manual page 3

4. From outside the vehicle, locate the holes drilled in the previous step. Using a 1" hole saw,
position the pilot bit into these holes and drill four, 1" openings through the roof.
5. De-burr these holes and install grommets (included).
Cable preparation and routing...
Fig. 2
The following section demonstrates how these cables should be routed. For example, locate the
strobe cable tagged "S1". This cable (like all of the cables) has one end with pinned terminals on the
wires and one end with socket terminals on the wires. Insert the pinned end of the "S1" cable through
the roof support cross-brace opening shown below. In this case, it is the opening below the driver side
outboard hole drilled previously. Feed this cable through the brace and down through the C-pillar until
it enters the trunk area of the vehicle. Continue to feed the cable through this pathway and into the
trunk until approximately 18" remain outside of the cross-brace. Repeat this for the remaining cables,
using the following illustration as a guide.
Fig. 3
Outboard
Hole
(Pass. Side)
Underside View of Roof
with Headliner Removed
(Wiring for Model FTR4 Shown)
Inboard
Hole
(Pass. Side)
H4
Before the lighthead cables can be routed through
the vehicle, they must first be prepared. Tag the
cables to be used for the strobe lightheads (3-
conductor) with the "S" tags and the cables to be
used for the halogen lightheads (2-conductor)
with the "H" tags. This will insure that the light-
heads are connected to their proper power supply
port. A lighthead's identity is determined by what
power supply port they are to be connected to.
Note: Before the cables are routed, the
installer may wish to apply a light coating of
silicone spray to the cable's outer jacket. This
will allow the cables to be routed more easily.
Inboard
Hole
(Driver Side)
Rear
Window
Page 3
Outboard
Hole
(Driver Side)