Lit-010_4-17 Service Bulletin/Repair Instructions

OPERATION MAINTENANCE SERVICE MANUAL

GEARED FOR INNOVATION SINCE 1960
DEXTER SWAY CONTROL (DSC)
www.dexteraxle.com
www.dexteraxle.com

2900 Industrial Parkway East n Elkhart, IN 46516

Phone: 574-295-7888 n Fax: 574-295-8666
ISO 9001 Certified
www.dexteraxle.com
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-
Dexter Sway Control Wiring
DSC Wiring
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 Wiring
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-
Dexter Sway Control Wiring
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
Blue

Brake

Signal

Wire
Full Size +12V

Trailer Battery
Frame

Ground
-
+
Break-Away

Switch

“Cold” Wire
Dexter Sway Control Wiring
Dexter

Sway Control
Left Front

Electric Brake

Purple
Right Front

Electric Brake

Pink
Left Rear

Electric Brake

Purple
Right Rear

Electric Brake

Pink
Rear

12 3

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