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Electronic Brake Controller 

Hayes Brake Controller Company P/N 81760 

INSTALLATION MANUAL 

For trailers with 2-6 electric brakes and vehicles with 12 volt negative ground systems only. 

READ AND SAVE THESE INSTRUCTIONS 

Before beginning installation, read and become familiar with these instructions.

Leave in tow vehicle for future reference.

Improper installation and operation could cause personal injury and/or equipment and

property damage.

SAFETY INFORMATION 

!
!

WARNING:

  

Indicates a potentially hazardous situation that,

if not avoided, could result in death or serious, personal injury.

CAUTION:

  

Indicates a potentially hazardous situation that,

if not avoided, could result in damage to product or property.

TIP:

  

Contains helpful information to facilitate installation.

Summary of Contents for 81760

Page 1: ...ese instructions Leave in tow vehicle for future reference Improper installation and operation could cause personal injury and or equipment and property damage SAFETY INFORMATION WARNING Indicates a p...

Page 2: ...ion that the driver can see and read the display The driver must be able to reach and operate the manual slide MANUAL OVERRIDE SLIDE LEVER DIGITAL DISPLAY SETUP ADJUSTMENT BUTTONS Figure 1 Front View...

Page 3: ...hich allows the driver to easily apply the manual override and to see the digital display Tinnerman Nut Self Tapping Screws Pan Head Machine Screw Mounting Bracket Figure 3 Attachment of Mounting Brac...

Page 4: ...onnected to a known good ground preferably the negative battery post Improper or no ground will result in poor controller performance or lack of performance altogether Improper ground connection can d...

Page 5: ...h or trailer tow wiring harness It is recommended that a 20 amp inline fuse be installed between the controller s red wire and the stop lamp switch The fuse is required in 1999 later Fords 4th Blue Ou...

Page 6: ...WITCH SW BRAKE CONTROLLER TOW VEHICLE TRAILER ELECTRICAL CONNECTOR TRAILER GROUND TRAILER BRAKES BLUE GROUND STOP LAMPS 20 AMP INLINE FUSE NOT FURNISHED WHITE BLACK RED Figure 4 Wiring Diagram WARNING...

Page 7: ...ONTROLLER FUNCTION RED BLACK 12 VOLT SUPPLY LIGHT BLUE RED STOPLIGHT DARK BLUE BLUE TRAILER BRAKES BLACK WHITE GROUND BROWN NOT USED ILLUMINATION 2004 INFINITY CONTROLLER FUNCTION RED BLACK 12 VOLT SU...

Page 8: ...e instructions Leave in tow vehicle for future reference Improper installation and operation could cause personal injury and or equipment and property damage SAFETY INFORMATION WARNING Indicates a pot...

Page 9: ...veness The digital display will indicate the amount of power being sent to the trailer brakes Once the brake pedal is released the unit will return to stand by mode While in stand by mode the controll...

Page 10: ...n to cycle through optional settings When desired time is displayed press button until the flashing stops The new Power Ramp Time is now set The newly selected value will be displayed for a few second...

Page 11: ...display mode is shown on the display 4 Press the button and hold until display stops flashing and release 5 The new display mode is now set Notes o The P display mode is the factory default mode and i...

Page 12: ...m trailer brake responsiveness between the tow vehicle brakes and the trailer brakes Figure 2 illustrates the effect of varying Power Ramp Time vs the controller s output Figure 2 Engage Power Ramp Ti...

Page 13: ...Set the display mode to PH Move the manual slide lever Figure 1 to the left The displayed value should increase and the tow vehicle stop lamps must illuminate B If SC is displayed the tow vehicle has...

Page 14: ...this process until the desired amount of braking is achieved H If needed follow the instructions in Changing Power Ramp Time section to increase or decrease the Power Ramp Time There are two methods...

Page 15: ...r is connected to the tow vehicle Connection to electric over hydraulic trailer brakes can also cause the display to flash OC The display will go blank when no load is detected for several minutes TIP...

Page 16: ...e magnets Test replace brake magnets Too many brake magnets are attached to controller Controller only handles 1 3 axles with brakes Intermittent short to ground in tow vehicle or trailer wiring Inspe...

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