NHTSA ID Number: 10108974
Manufacturer Communication Number: Lit-010_4-17
TSB/Document Date: 2017-08-01
Summary
Dexter
Sway Control Service Manual revision
OPERATION MAINTENANCE SERVICE MANUAL
GEARED FOR INNOVATION SINCE 1960
www.dexteraxle.com
2900 Industrial Parkway East n Elkhart, IN 46516
Phone: 574-295-7888 n Fax: 574-295-8666
ISO 9001 Certified
4/17
© 2014-2017 Dexter Axle Company. LIT-010-OO
Introduction
Dexter is proud to put control and peace of mind in hauling a trailer or
caravan back into your hands with the Dexter Sway Control System. This
innovative device automatically stabilizes the sway of a trailer. It works
independently of the tow vehicle and automatically applies the trailer or
caravan brakes in the event of a sway.
As you are driving, the Dexter Sway Control System is constantly
monitoring trailer yaw, or side-to-side movement, quickly recognizing and
adjusting for sway conditions.
This manual is designed to provide information for you to understand, use,
and guide you through the process of installing, operating, and maintaining
your Dexter Sway Control System.
Assembled in the USA by Tuson RV Brakes, LLC.
Visit us online at www.dexteraxle.com
Dexter Sway Control (DSC) Trailer Mounting.............................3
DSC Mounting Location.......................................................3
Mounting Hardware..............................................................4
DSC Wiring.................................................................................7
Trailer Battery.......................................................................7
Ground Connections............................................................8
12 Volt Connections.............................................................9
Electric Brake (Blue) Wire Connections.............................10
Left and Right Brake Wires................................................11
Wire Connections to Trailer Plug and System Overview....12
DSC Wiring Harness..........................................................13
Functional Test Procedure........................................................15
Testing the DSC for Correct Wiring....................................15
The DSC Status Light Module...........................................18
Status Light and Troubleshooting.............................................19
How the DSC Works.................................................................21
Limited Warranty.......................................................................22
Table of Contents
Video Gallery............................................................................25
Scan to view
Sway Control video
-2-
CAUTION
This is the safety alert symbol. It is used to alert you to
potential injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
CAUTION
The Dexter Sway Control should only be installed by a
qualified technician.
DSC Trailer Mounting
DSC Mounting Location
Select a location on the trailer to mount the DSC. The location
must be 5 to 10 feet behind the trailer bumper hitch ball and
shielded from road debris. The DSC must be securely fastened
onto a vertical surface that does not flex or move from wind, such
as plastic covers or plastic walls. The center of the DSC (marked
by a red dot on the DSC label shown below) must be positioned
on the “center line” of the trailer and the DSC must be mounted
with the correct side in the UP direction as indicated on the label.
The longest edge of the DSC (as indicated by a red line on the
label) must be mounted parallel to the trailer axle beam(s). See
Figure 1.
MOUNT THIS EDGE UP
Module will not function if
positioned and/or oriented
improperly. Read and
follow all Installation Instructions
to ensure proper operation.
WARNING
www.dexteraxle.com
Phone: 574-295-7888
Part No. 058-010-00
Label No. 059-898-00 Rev C
Assembled in the USA by Tuson RV Brakes, LLC.
MOUNT THIS POINT ON TRAILER CENTER LINE
Wires Trailer Wire Function
MODULE WIRING
CONNECTOR
ON THIS SIDE
Purple
Pink
White
Blue
Black
Left side electric brakes output
Right side electric brakes output
Trailer battery/frame ground point
Electric brake controller signal from tow vehicle
12VDC from tow vehicle trailer harness
Mount this edge parallel with the trailer axle beams 5 to 10 feet back
from trailer bumper hitch ball on a vertical frame surface
-3-
Dexter Sway Control Mounting
!
It is essential that the DSC be oriented in the proper direction
when it is installed.
CAUTION
Ensure the electric brakes are adjusted and
maintained in accordance with the manufacturer’s
recommendations in your owner’s manual for proper
operation of the sway control module.
Mounting Hardware
The DSC should be mounted using the mounting flanges which
are located on both sides of the unit. Included are four (4) #10
self-tapping screws to mount the DSC to the trailer.
You must NOT drill holes in the DSC for any reason. Drilling holes
or puncturing the unit VOIDS YOUR WARRANTY.
Dexter Sway Control Mounting
CAUTION
Do not spray high pressure water on the DSC. The DSC
is a weather sealed water resistant unit, but it is not
designed to withstand direct high pressure spray from a
power washer.
-4-
h
W
Bla
ck
Br
e
Swak-A
itc w
a
h y
ue
Bl
DSC mounted
with the correct
side in the
UP direction
Frame
Ground
5 to 10 feet
behind hitch
ball
Full Size +12V
Trailer Battery
-
+
Dexter
Sway
Control
Edge Parallel
with Axle Beams
DSC Center on
Vertical Frame
Surface on Trailer
Centerline
Trailer
Centerline
White
Left Front
Electric Brake
Right Front
Electric Brake
Purple
Pink
Left Rear
Electric Brake
White
Right Rear
Electric Brake
Pink
Rear
Figure 1
It is essential that the DSC be oriented in the proper direction
when it is installed.
-5-
Dexter Sway Control Mounting
Front
ite
Dimensional Information for
Locating and Mounting
4.50”
3.625”
2.625”
2.25” high
3.5” w
ide
Dexter Sway Control Mounting
5.75” lo
ng
Figure 2
-6-
Trailer Battery
The trailer must be equipped with a full size 12 volt battery. Small,
gel-cell type batteries must not be used with the DSC.
Front
e
e
hit
Blu
Bla
ck
Br
ea
Sw k-A
itc w
h ay
W
e
Blu
Frame
Ground
Full Size +12V
Trailer Battery
-
+ Battery
Blue
+
Must Use
Full Size
Trailer Battery
White
Dexter
Sway Control
White
Left Front
Electric Brake
Right Front
Electric Brake
Purple
Pink
Left Rear
Electric Brake
White
Right Rear
Electric Brake
Pink
Rear
Figure 3
-7-
Ground Connections
The tow vehicle ground, trailer battery ground, trailer frame
ground, DSC ground (white) wire and the electric brake ground
wires on both sides of the trailer, must all be securely connected
together with 14 gauge wire (min.) in order for the DSC to function
properly.
Front
e
ite
Blu
Bla
ck
Br
ea
Sw k-A
itc w
h ay
Wh
Full Size +12V
Trailer Battery
Frame
Ground
-
+
White
Dexter
Sway Control
White
Left Front
Electric Brake
White
Left Rear
Electric Brake
Rear
Figure 4
-8-
All Grounds
Connected
Together
Right Front
Electric Brake
Right Rear
Electric Brake
The tow vehicle 12 volt charge line, the 12 volt trailer battery
terminal and the DSC 12 volt (black) wire must be securely
connected together with 14 gauge wire (min.) in order for the DSC
to function properly. The “hot” wire from the breakaway switch must
be connected to the +12V terminal of the trailer battery.
Front
Bla
ck
Br
ea
Sw k-A
itc w
h ay
Break-Away
Switch
“Hot” Wire
+ Battery
Full Size +12V
Trailer Battery
Frame
Ground
-
+
Dexter
Sway Control
+ 12 Volt
Connections
Left Front
Electric Brake
Purple
Right Front
Electric Brake
Pink
Left Rear
Electric Brake
Purple
Right Rear
Electric Brake
Pink
Rear
Figure 5
-9-
12 Volt Connections
Electric Brake (Blue Wire) Connections
The tow vehicle brake controller signal (blue) wire must be
securely connected to the DSC brake signal (blue) wire as well
as to the “cold” wire from the breakaway switch as shown in the
wiring diagram.
Front
e
Blu
Br
e
Swak-A
itc w
h ay
Blue
Full Size +12V
Trailer Battery
Frame
Ground
-
+
Break-Away
Switch
“Cold” Wire
Dexter
Sway Control
Left Front
Electric Brake
Purple
Right Front
Electric Brake
Pink
Left Rear
Electric Brake
Purple
Right Rear
Electric Brake
Pink
Rear
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TSB/Document ID: Lit-010_4-17
Replacement Service Bulletin Number:
MFR Communication Date: 2017-03-22
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT
MFR Component System:
MFR Component Subsystem:
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