OPERATING INSTRUCTIONS FOR THE
Control (9040 & 9045)
For 2, 4 and 6*
brake applications (*6 brake for SX model only)
THIS FIRST: Read and follow all instructions
carefully before installing or operating the brake control. Keep these
instructions with the brake control for future reference.
the Brake Control
Facts to Remember
not mount or activate RF generating items (cell phones, two way radios) near
(less than 12") the brake control.
the connection to a breakaway battery on the trailer will destroy the brake
trailer plug from the tow vehicle prior to testing a breakaway switch, or you
may destroy the brake control.
GREEN light draws 5 milliamperes of current from tow vehicle. It would take over
10,000 hours to drain the tow vehicle battery.
level adjustment is CRITICAL. The level adjustment determines whether automatic
braking response is delayed or aggressive.
brake control is activated by inertia. It senses deceleration and generates an
output that reflects the inertia sensed. In a stationary state, the brake
control will not apply the trailer brakes unless the Manual Slide Knob is
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The Brake Control must be mounted from 0 degrees to 70 degrees nose up. (See
Below.) Failure to install brake control within these constraints may cause your
control to become inoperable.
x 3/8" Screws
Drilling or use of longer screws may damage unit.
Securely mount bracket to a solid surface.
supplied #6 x 3/8" screws on each side into the mounting holes.
control to desired position and tighten screws until snug.
Dash Ball Mount
Double Sided Tape
1. Arrow on top of Mounting Ball must point toward
rear of tow vehicle, as shown above.
2. Prior to mounting, clean dash with all-purpose
cleaner or 50/50 water alcohol mixture.
Attach double sided tape (A) to top of Mounting Ball (B).
2. Temporarily attach
Mounting Ball (B) to dash using other side of double sided tape.
Mounting Ball (B) as a template, drill (3) 1/16" holes for a #6
Mounting Ball (B) to dash using (3) #6 x 3/8" screws supplied.
Insert Mounting Screw (D) through bottom of brake control.
Foam Gasket (C) on top of brake control inserting Mounting Screw (D) through
brake control to Mounting Ball.
Rotate brake control to desired position and tighten until snug.
1. Front of brake control must be horizontal, see
2. Brake control
must be parallel to direction of travel (A), see below.
After the brake
control has been securely mounted the level adjustment must be set.
1. Due to the fine tuning capability of the
inertia level adjustment, the level knob can be fully rotated 8-9 times
from stop to stop. This equals roughly 45 partial turns across the finger indent
on the bottom of the control.
2. This brake control
is activated by inertia and requires the level to be set properly, or the
braking response will be too harsh or ineffective.
3. To properly level the sensor, the trailer and
tow vehicle must be parked on a level surface and trailer must be connected to
4. The brake control
has been shipped from the factory with the level knob adjusted to the maximum
counter-clockwise position. Therefore, the level knob will only rotate clockwise
from the factory shipped position.
Manual Slide Knob
Connect trailer to tow vehicle, Bi-Colored Light (B) should glow GREEN.
Power Knob (A) to maximum. (Rotated fully clockwise.)
Depress tow vehicle's brake pedal and hold. (Bi-Colored Light (B) should
glow bright RED.)
the Level Knob (F) to the left (clockwise-Delayed) until the
Bi-Colored Light (B) starts to change colors from RED to GREEN.
You may need to partially rotate level knob as many as 45 times depending upon
your mounting angle.
5. Carefully rotate
the Level Knob (F) to the right (Counter-Clockwise - Aggressive) until a
shade of ORANGE is visible.
DIM ORANGE for
a typical setting.
for an aggressive setting.
DIM RED for a
more aggressive setting.
When the brake control is leveled properly there
will be very little current flowing through the brake magnets in a static state
with the foot pedal depressed. The brake magnets will hum when there is current
flowing through them. Anytime the Bi-Colored Light shows any color other than
GREEN, there is current flowing through the brake magnets.
The Power to The Trailer Brakes
Once the control
has been installed and properly leveled, it is necessary to set the power needed
to stop the trailer during a braking event.
Connect trailer to tow vehicle.
Power Knob to the 12 o'clock position.
tow vehicle and trailer on a dry level paved surface at 25 mph and apply manual
Step (4) until power has been set to a point just below wheel lock up or at a
sufficient force as to achieve maximum braking power.
the brake pedal, make a few low speed stops to check the Power and Level
adjustments. The automatic response (brake pedal) is initiated and terminated
via the stoplight switch. When the brake pedal is released, trailer
braking will cease.
Now that the Power
has been set, it is time to fine tune the level setting for the majority of the
stopping that you will be doing.
1. Make several
slow (25 MPH) stops as if coming up to a stop sign and take notice of how the
trailer brakes respond:
You have an Aggressive Setting:
To correct this condition rotate level knob to the LEFT (clockwise - more
Tending to Push Tow Vehicle
You have a Delayed Setting:
To correct this condition rotate level knob to the RIGHT (counter-clockwise
- more Aggressive).
until desired trailer braking is achieved.
1. Always warm the trailer's brakes before setting
the power. Warm trailer brakes tend to be more responsive than cold brakes. To
warm trailer brakes, drive a short distance (1/4 mile) at 45 MPH with manual
slide engaged approximately halfway.
2. The power should
never be at a level high enough to cause trailer brakes to lock up. Skidding
trailer wheels can cause loss of directional stability of trailer and tow
3. The power may need
to be adjusted for different load weights and road conditions.
4. Not all trailer
brakes will lock up due to various conditions.
5. When the
level and power are set correctly you should feel unified braking between the
trailer and tow vehicle.
performance may be slightly sluggish in sub-freezing temperatures. Allow
adequate time for the brake control to warm prior to use in sub-freezing
7. When in doubt of
the proper setting procedures review the above steps starting at LEVELING THE
SENSOR through FINE TUNING or consult your tow card included with your brake
Tow vehicle connected to trailer NO GREEN light.
1. Corrosion on
trailer plug contact.
2. Loose POWER or GROUND connection.
Tow vehicle connected to trailer, light is GREEN.
When Manual Slide Knob is activated:
A. No RED light.
B. Light is Dim RED or flashing RED.
C. Light glows dim RED and gets brighter as POWER
Knob is decreased.
1. POWER set at or near minimum.
2. Short on BRAKE line (BLUE wire).
3. BLACK & WHITE wires reversed, control
4. 12 volts from external source on BRAKE line (BLUE
1.Open on GROUND line (WHITE wire).
2. Short on BRAKE line (BLUE
1. Short on BRAKE line (BLUE wire).
2. Defective brake magnets.
Braking with foot pedal is too aggressive.
1. Sensor set too aggressive, see
2. Power set too high.
Braking is delayed for extended period.
1. Sensor set improperly, see
2. Power set too low.
Tow vehicle connected to trailer, brake pedal
A. No RED light.
1. Vehicle not moving, need to be moving for brakes
2. No signal from brake light,
test voltage on RED wire.
3. Sensor set improperly, see
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