Suggested Installation Connection Points
April 6, 2010
FREIGHTLINER
Century, Columbia
Coronado, Argosy
Primary connection -
Passenger side fuse panel
area at A Pillar (BATT+
stud with nut).
Secondary location is "B"
pillar PDM on driver's side
(BATT+ = 331 grey wire on
Century and Columbia
models)
Primary connection
- Passenger side
fuse panel area at
A Pillar (IGN+ stud
and nut) (DO NOT
USE ISO+).
Secondary location
is “B” Pillar PDM on
driver's side (IGN =
434R grey wire on
Century and
Columbia models)
Passenger side, fuse
panel area on cab
wall use Tech Screw
and ring terminal on
wire (scrape paint
COMPLETELY PRIOR
TO SECURING
SCREW).
Secondary location
is “B” Pillar PDM on
driver's side (BATT-
= GND grey wire on
Century and
Columbia models)
Look for Green and Orange
twisted pair wires. J1708+ =
Green, J1708- = Orange. J1708
wires are located below the
passenger side fuse panel
behind lower dash panel or at
the "B" pillar compartment on
the driver side.
Another option is behind the
diagnostic plug.
6-pin diag plug, J1708+ = pin A,
J1708- = pin B.
9-pin diag plug, J1708+ = pin F,
J1708- = pin G.
Look for green and yellow
twisted pair wires on
passenger side below fuse
panel, behind lower dash
panel. The wires go
through the middle region
behind the panel. The
green and yellow twisted
pair are sometimes
protected in a black jacket
or casing.
Another option is to
connect behind the 9-pin
diag plug; it’s on the driver
side "B" pillar area next to
the driver's seat. Find
yellow (J1939+) and green
(J1939-) wires and connect
accordingly.
W/out PLC filter = wire
#45 (yellow) coming in
through firewall at
passenger side floor
where fire wall and
floor join
Columbia 2005 year –
376E wire.
w/PLC filter and truck
build dates from
2/16/01 - 6/6/04 = wire
#376C4 connection
made outside truck,
inside driver side frame
rail.
W/PLC filter truck build
date after 6/6/04 = wire
#376C1 found in
driver's side "B" pillar
area.
Century Class model
year 2009 and newer
use PLC filters. This
connection must be
made outside the truck
as close as possible to
the tractor 7-way
connector.
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