2
TOW-PRO
®
LIBERTY PROPORTIONAL TRAILER BRAKE CONTROLLER
The Tow-Pro
®
Liberty is a proportional electric trailer brake controller designed to suit
most common trailer braking applications while requiring minimal dash space and being
simple to install and operate.
The Tow-Pro
®
Liberty features Active Calibration which constantly monitors the direction
of travel and will even calibrate with no trailer attached whilst maintaining the ability
to mount in any orientation. On vehicles which only activate the trailer lighting circuits
when a trailer is detected by the vehicle, calibration will commence immediately a trailer
is detected.
The unit is able to operate electric or electric over hydraulic trailer brakes from 12V
vehicle systems without the need for manual selection or extra components.
WARNINGS & SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS - THIS MANUAL CONTAINS IMPORTANT SAFETY INSTRUCTIONS
FOR THE TOW-PRO
®
LIBERTY PROPORTIONAL TRAILER BRAKE CONTROLLER.
DO NOT OPERATE THE CONTROLLER UNLESS YOU HAVE READ AND UNDERSTOOD
THIS MANUAL AND THE CONTROLLER IS INSTALLED AS PER THESE INSTALLATION
INSTRUCTIONS.
PLEASE ENSURE INSTRUCTIONS ARE PASSED ON TO END-USER
THIS PRODUCT MAY CONTAIN CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO
CAUSE CANCER AND BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.
ENSURE THAT YOUR TRAILER BRAKES ARE INSTALLED AND ARE OPERATING CORRECTLY:
IMPROPERLY INSTALLED AND/OR FAULTY TRAILER BRAKES CAN CAUSE ERRATIC VEHICLE
OR TRAILER BEHAVIOUR WITH THE POTENTIAL TO CAUSE A ROAD ACCIDENT. FOR THIS
REASON, IT IS OF UTMOST IMPORTANCE THAT YOUR TRAILER BRAKING SYSTEM BE
INSTALLED/MAINTAINED BY A QUALIFIED INSTALLER.
ALWAYS CHECK BRAKES AT LOW SPEED EACH TIME A TRAILER IS ATTACHED TO YOUR
VEHICLE.
1.
Ensure that the Tow-Pro
®
Liberty is installed inside the vehicle cabin and away
from any environmental conditions that may cause damage, including engine
heat, submersion in water, salt spray, dripping water and humidity. Exposure
to these conditions may cause damage to the unit’s circuitry and may cause
erratic trailer braking.
2.
Ensure that the Tow-Pro
®
Liberty is mounted securely in a fixed location.
Failure to mount securely will result in inaccurate braking force measurements
and incorrect braking of the trailer.
3.
A Fuse or Circuit Breaker of appropriate rating (see section 2.2.2) must
be installed to protect the vehicle system. Please refer to the installation
instructions (section 2)
for specific instructions on where to install the Fuse or
Circuit Breaker and for appropriate Fuse or Circuit Breaker rating. The Fuse or
Circuit Breaker must be installed as close as possible to the battery.
4.
Ensure the remote head push-button activates correctly when installed into
surfaces with a thickness greater than 0.12” / 3.0mm. Failure to activate
correctly would result in not being able to activate the override function.
5.
Ensure that the wire(s) and all connections used to install the Tow-Pro
®
Liberty
are suitably rated to supply the required current to simultaneously operate the
trailer electric brakes and stop lamps, Please refer to the wiring gauge guide
on page 6. Incorrect wiring can result in reduced (or total loss of) trailer braking
and/or damage to property or persons.
6.
The Tow-Pro
®
Liberty is suitable for all trailers fitted with electric brakes with
up to two axles.
1.
Ensure that a correct grounding point is used. Vehicles often have ungrounded
metal reinforcements under the dash and these points are not suitable
grounds. Poor grounding of the unit will result in poor or no operation.
2.
Do NOT exceed Tow Vehicle and Trailer weights and specifications. Failure
to abide by the towing regulations, including maximum loads, may result
in a fine, or in case of an accident, refusal of the insurance claim, and the
possibility of further legal action.
3.
If the tow vehicle or trailer’s maximum load is exceeded, police and transport
authorities have the power to order the combination off the road until the issue
is corrected. This may necessitate leaving the trailer on the side of the road
while a vehicle with suitable towing capacity is sourced or the trailer load is
reduced. Please contact your local authorities for further information.
4.
If no trailer is connected, Active Calibration may occur as normal without
any indication from the LED. The LED will already be Blue when the trailer
is connected. Essentially, whether a trailer is connected or not, just drive
normally and Active Calibration will ensure the Tow-Pro
®
Liberty learns the
correct direction of travel.
5.
Do NOT install the Remote Head in any location that may impede the activation
of vehicle air-bags.
6.
The State of California regulations require that the manual override function
illuminates the trailer brake lights. Once the TowPro Liberty is installed it
should be tested with your vehicle to confirm the wiring configuration to make
sure the brake lights are illuminated when the override button is pressed.
1 SPECIFICATIONS
Part Number
EBRH-ACCNA
Operating Voltage
9V - 16V
Nominal Input System Voltage
12V
Brake Input Signal Voltage
OFF: 0V
ON: +12V nominal
Brake Coil Voltage
12V
Max. Trailer Axles
2 Axles
Nominal Current Draw
12A
Max. Rated Current
18A
Standby Current
<5mA
Operating Temp
-4°F to 140°F
-20°C to +60°C
Weight
7oz / 200g
Warranty
2 years
Kit Contents
1.
Remote Head Assembly
2.
Main Unit
3.
Remote Head Nut
4.
Remote Head Knob
5.
Remote Head Bezel
6.
Remote Head Cable (3’-3”/1m)
Dimensions & Connection
1.2in
30.0mm
0.4in
10.0mm
0.4in
10.0mm
Brake
Lights
(RED)
Input
Power
(BLACK)
Ground/
Earth
(WHITE)
Brake
Output
(BLUE)
Remote Head
Connection
0.9in
23.7mm
0.7in
19.0mm
(Recommended)
0.5in
11.5mm
0.8in
20.0mm
0.8in
20.0mm
1.7in
43.5mm
1.8in
46.5mm
2.9in
74.0mm
2.6in
67.0mm
3.3in
84.5mm
1.1in
28.8mm
4.1in
104.0mm
3.9in
100.0mm
EBRH-ACCVNA Instruction Manual – Version 1
1
2
4
3
5
6
