The pendulum (Fig. 2) set-up procedure must be performed at the time of installation and any time thereafter when the control module loses it's power connection to the battery. If the control module loses power from the vehicle battery, the stored data in memory will be lost and erratic operation may result. Set-up and readjustment will be required.

PENDULUM LEVELING

WARNING
THE TOW VEHICLE MUST BE STATIONARY ON LEVEL GROUND FOR THIS ADJUSTMENT.

After the brake controller has been securely mounted and properly wired to the tow vehicle, the pendulum MUST be adjusted to level. The leveling adjustment should be made with the tow vehicle parked on level ground. To level the pendulum, position the pendulum leveling arm (Fig. 1) so that it points straight down, perpendicular to the ground (Fig. 10). This is the reference point for all pendulum adjustments.

PENDULUM ZERO-ADJUST

Now that the pendulum is at level, the microprocessor MUST mark this position as zero. The zero-adjust is only needed once to capture the reference starting point of the leveled pendulum. However, a new zero-adjust must be performed if the control module loses it's power connection and it's memory. To perform the zero-adjust, push and hold the gain select button (Fig. 1) for approximately five seconds. The LED display will flash when the zero-adjust is complete.

WARNING
THE BRAKE PEDAL AND MANUAL BUTTON MUST BE RELEASED TO OPERATE THE ZERO-ADJUST FEATURE.

Adjusting the control module is very important. Careful adjustment is the key to obtaining optimum tow vehicle and trailer brake response. Smooth, effective braking is achieved by adjusting the gain setting and/or pendulum leveling arm.

WARNING
PLEASE PAY CAREFUL ATTENTION TO THIS SECTION ON CONTROL MODULE ADJUSTMENT. IMPROPER ADJUSTMENT OF THE CONTROL MODULE COULD RESULT IN DELAYED OR NO TRAILER BRAKES AND/OR "GRABBY" OR PULSING TRAILER BRAKES.

GAIN SETTING ADJUSTMENT

The gain setting (Fig. 4) is used to set the hardness of trailer braking. The optimum initial gain setting is chosen according to individual trailer load and axle capacity and adjustments are made to fit each drivers comfort level. To adjust the gain setting, find a flat, hard, dry surface and perform several stops at a moderate speed (25 mph or less) and under normal brake pedal pressure, a firm braking action should occur. If more/less trailer braking is needed, according to the combined braking -effort of the tow vehicle and trailer, increase/decrease the gain one setting.

NOTE 9 - The brake pedal and manual button must be released to operate the gain button.

WARNING
OPTIMUM TRAILER BRAKING OCCURS JUST BEFORE THE TRAILER WHEELS LOCK-UP. TRAILER BRAKE LOCK-UP COULD CAUSE LOSS OF CONTROL OF TRAILER AND/OR TOW VEHICLE.

PENDULUM LEVELING ARM ADJUSTMENT

The normal operating mode is with the pendulum in the level position. However, once the gain has been set, the pendulum leveling arm (Fig. 1) is used to adjust the smoothness of the brake response. The pendulum leveling arm adjustments are made to fit certain braking conditions and/or driver preference. Moving the pendulum arm beyond level can activate a delayed or aggressive mode of trailer braking. Remember, all pendulum adjustments are made from a zero reference point taken from the pendulum leveling procedure (Fig. 10).

The Aggressive mode (Fig. 11) will sometimes improve a "jerky" brake response and provide a more firm, smooth braking action. To adjust for more aggressive braking, move the pendulum leveling arm approximately 2-3° degrees back toward the rear of the tow vehicle

WARNING
THE AGGRESSIVE MODE MAY FEEL CHOPPY AT SPEEDS LESS THAN 10 MPH. READJUST AS NECESSARY.

The Delayed mode (Fig. 9) will sometimes provide a smoother braking action. The delayed mode is used most often when driving down steep grades or when driving with the hazard light on. To adjust for delayed braking, move the pendulum leveling arm approximately 2-3° degrees toward the front of the tow vehicle.

WARNING
THE DELAYED MODE MAY FEEL CHOPPY UNDER CERTAIN ROAD CONDITIONS. READJUST AS NECESSARY.

BRAKING ON HILLS

When properly adjusted, the control module will allow a slightly greater amount of trailer braking going down hill and slightly less trailer braking going uphill. Normally, no control module readjustment is necessary for towing in the hills.

TRAILER BRAKING WITH 4-WAY FLASHERS OPERATING

With the control module properly adjusted and the four way flashers active, no undesired trailer braking will occur.

WARNING
THE PENDULUM IS A DECELERATION SENSOR AND IT CAN MOMENTARILY ENERGIZE THE TRAILER BRAKES UNDER BUMPY OR ADVERSE ROAD CONDITIONS. THE CONTROLLER CAN BE DE- SENSITIZED TO THIS CONDITION BY ADJUSTING THE PENDULUM LEVELING ARM TO A SLIGHTLY DELAYED POSITION.

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