Suggested Installation Connection Points
April 6, 2010
PETERBILT
377, 378, 379, 386, 388,
389
Power can be obtained
either from the ignition
switch or from a solenoid
mounted behind the
speedometer and
tachometer dash area.
The solenoid connection is
the primary recommended
install location.
There are also spare BATT
+ barrel connectors behind
the left most gauge set
(RED)
Ignition can be
obtained either
from the ignition
switch or from a
solenoid mounted
behind the
speedometer and
tachometer dash
area.
The solenoid
connection is the
primary
recommended
install location.
There are also
spare IGN + barrel
connectors behind
the left most gauge
set (ORANGE)
Metal frame just
below the solenoid.
Make sure it is paint
free.
There are also spare
GND barrel
connectors behind
the left most gauge
set (black or white)
The J1708 data wires are
twisted pair colored purple and
white. Purple is J1708+ and the
White wire is for J1708-. J1708
Terminal block is located
behind the Speedo/tachometer
head dash panel area.
Trucks made after March 2005
twisted pair wire colors are
purple and green. J1708+ =
purple, J1708- = green.
Connect behind the 9-pin
diag plug; it’s on the driver
side "A" pillar area. Find
yellow (J1939+) and green
(J1939-) wires and connect
accordingly.
Black wire labeled
"AUX" with white
writing located by the
driver's left foot area
behind the fuse panel.
The installer will have
to move the main fuse
panel out of the way.
Note: The TTRACS
connection should be
made inside the vehicle
cab just before the wire
goes through the
firewall. This "AUX"
wire is Black inside the
cab and blue outside
the cab in the engine
area.
STERLING
A-Line, L-Line, Acterra
"A" post located in
passenger side dash (glove
box) area
"F" or "G" post
located in
passenger side
dash (glove box)
area
"C" post located in
passenger side dash
(glove box) area
J1708+ is post "K", J1708- is
post L.
Models without posts K & L go
to the Deutsch connector and
connect to the appropriate
pins.
Pins A (+) & B (-) for a 6 position
plug and Pins F (+) & G (-) for a
9 position plug. The J1708 wires
are green and orange with
green being J1708+.
TTRACS connection
must be made outside
the truck by the PLC
Filter to wire# 376C4 or
the green input wire
coming from the PLC
Filter.
For trucks older 2001
you can connect to the
Trailer Aux line which
goes to fuse position
labeled "EE" at the PDM
(Power Distribution
Module).
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