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Frequently Asked Questions
This is where you will find answers to the questions that are commonly asked of us. If you cant find the information you need here, please submit your question to us using the form in our contact page.
Prodigy RF®
Q. The hand held remote will not pair to the Power Module.
A. The Prodigy RF needs to have a 12 volt supply on the battery charge circuit and a signal from both brake lights circuits in the 7-way connector on the tow vehicle.
Possible Causes:
  • Gain not turned down to minimum.
  • No voltage on the 12v battery charge circuit in vehicle 7-way.
  • No stop light signal in vehicle 7-way.
  • Power Module not plugged into tow vehicle.
  • Trailer is plugged into power module.
  • Possible defective unit.
Q. Hand Held will not show 0.0 with gain at minimum.
A. The gain wheel has to be set to minimum to pair the hand held remote to the power module.
Possible Causes:
  • Some units will not show 0.0 until after they are paired.
  • Powered knob not at minimum.
  • Possible defective unit.
Q. Shows N.C after pairing
A. The N.C can mean either not communicating or trailer not connected.
Possible Causes:
  • Unit did not pair (Not Communicating).
  • Trailer is not connected properly or completely to Power Module.
  • Open in trailer brake circuit.
  • Poor ground to trailer brake magnets.
  • Possible defective unit.
Q. Can we get main power for the module from the battery on the trailer?
A. The Power Module for the Prodigy RF needs to have a 20 amp 12 volt power supply from the tow vehicle. Using the trailer battery without having a battery charge wire, will discharge the battery and decrease the braking effort on the trailer.
Q. Will in cab brake control effect the Prodigy RF?
A. An in cab brake control will have no effect of the Prodigy RF. The electric brake wire coming from the truck, to the power module is not connected in the Prodigy RF.
Q. The display shows SH (short)
A. The Prodigy RF detects a short to ground on the brake wire (Blue wire). The Prodigy RF has to have a complete circuit from the power module to the brake magnets to ground and has to have the proper resistance.
Possible Causes:
  • Short to ground on brake wire.
  • Shorted brake magnet.
  • Trailer has electric over hydraulic brakes.
  • Faulty control.
Q. The display shows OL (overload)
A. The Prodigy RF detects a high current condition on the brake wire (Blue wire). The Prodigy RF has to have a complete circuit to the brake magnets to ground and has to have the proper resistance.
Possible causes:
  • Short to ground on brake wire.
  • Shorted brake magnet.
  • Trailer has electric over hydraulic brakes.
  • Faulty control.
P3®
Q. Control shows Short To Battery-No brakes
A. The P3 detects a short to power on the brake wire (Blue wire).
Possible causes:
  • Brake wire shorted to an external power supply
  • Moisture in trailer connector
  • Contamination in the trailer connector
  • Faulty control
Q. Shows Overload No Brakes
A. The P3 detects excessive current on the brake wire (Blue wire).
Possible causes:
  • Short to ground on brake wire.
  • Shorted brake magnet.
  • Moisture or corrosion in trailer connector.
  • No voltage on battery charge circuit (for electric over hydraulic brakes only).
Q. What angle doe the P3 have to be mounted at?
A. The P3 must be mounted in the direction of travel and should be fairly level from side to side. Front to back the control can be mounted at any angle.
Q. Shows No Trailer Connected When Trailer Is Connected.
A. The P3 has to have a complete circuit to the brake magnets and then to ground.
Possible causes:
  • Open on brake circuit (Blue wire).
  • Open on ground circuit of trailer brakes.
  • Faulty control.
Q. No Auto function (No Braking With Brake Pedal, but OK with the manual lever)
A. Possible causes:
  • No power on the red wire at the rear of the control, with brake pedal depressed.
  • Faulty control.
Q. Shows Output Shorted-No Brakes
A. Possible causes:
  • Short to ground on electric brake wire (Blue wire)
  • Shorted brake magnet.
  • Moisture or corrosion in trailer connector.
  • Faulty control.
Q. Shows Open Ground-No Brakes
A. The P3 detects an open ground.
Possible causes:
  • Poor or no connection to ground on the white wire of the P3.
  • Faulty control.
Q. Shows Power Loss-No Brakes.
A. The P3 detected a power loss on the Black wire during a braking event.
Possible causes:
  • Applied brake pedal or manual lever while connecting the P3 to power.
  • Poor connection on Black wire.
  • Faulty circuit breaker.
  • Faulty control.
Prodigy P2®
Q. The P2 display shows PL.
A. The P2 detected a power loss on the Black wire during a braking event.
Possible causes:
  • Applied brake pedal or manual lever while connecting P2 to power.
  • Poor connection on Black wire.
  • Faulty circuit breaker.
  • Faulty control.
Q. The display shows og or OG.
A. The P2 detects an open ground.
Possible causes:
  • Poor or no connection to ground on the White wire of the P2
  • Faulty control.
Q. The display is blank.
A. The P2 will go into a Sleep Mode after approximately 15 minutes of no movement or input.
Possible causes:
  • P2 went into sleep mode.
  • No power on black wire of P2.
  • Bad ground on White wire of P2.
  • Faulty control.
Q. The display shows one dot or the display shows two dots.
A. The left dot is the power indicator. Meaning that the P2 is powered up and ready. The right dot is the Boost indicator. This tells you that there is a level of boost set.
Q. No "C" displayed with trailer connected or shows "nc" with trailer connected.
A. The P2 has to have a complete circuit on the Blue wire to the trailer brakes and then to ground.
Possible causes:
  • Open on brake circuit (Blue wire).
  • Power back feed on brake wire (Blue wire).
  • Trailer has electric over hydraulic brakes and control set for electric brakes.
  • Brake circuit has incorrect resistance on electric brakes.
  • Open on ground of brake circuit.
  • Faulty control.
Q. The display shows "SH".
A. Possible causes:
  • Short to ground on brake wire (Blue wire).
  • Faulty control.
Q. The display shows "OL".
A. The P2 detects excessive current on the brake wire (Blue wire).
Possible causes:
  • Short to ground on brake wire.
  • Trailer has electric over hydraulic brakes and control is set to electric brake mode.
  • No power on battery charge circuit (for electric over hydraulic brakes only)
  • Faulty control.
Prodigy & Primus IQ®
Q. Will the Prodigy or Primus IQ work with electric over hydraulic brakes?
A. These controls were designed to operate electric brakes that are activated by electro- magnets. They have not been tested for the use on electric over hydraulic brakes. Please contact the manufacturer of the hydraulic control unit for their recommendation.
Q. Display shows "PL"
A. The control detected a power loss on the Black wire during a braking event.
Possible causes:
  • Applied brake pedal or manual lever while connecting the control to power.
  • Poor connection on black wire.
  • Fault circuit breaker.
  • Faulty control.
Q. The display shows "og" or "OG"
A. The control detects an open ground.
Possible causes:
  • Poor or no connection to ground on the White wire of the control.
  • Faulty control.
Q. The display is blank.
A. These controls will go into a Sleep Mode after approximately 15 minutes of detecting no movement or input.
Possible causes:
  • Control is in sleep mode.
  • No power on Black wire of control.
  • Poor or no connection to ground on white wire of control.
  • Faulty control.
Q. The display shows one dot or the display shows two dots.
A.The left dot is the power indicator; meaning that the control is powered and ready. The right dot is the boost indicator. This tells you that some level of boost is set.
Q. The top or bottom horizontal bars are flashing.
A. If the top bars are flashing, this tells you that the control is mounted at too steep of an angle. If the bottom bars are flashing, this tells you that the control is mounted at too low of an angle.
Q. No "C" with trailer connected or shows "nc" with trailer connected.
A. These controls have to have a complete circuit on the Blue wire to the brake magnets and then to ground, with the proper resistance and an inductive load.
Possible causes:
  • Open on electric brake wire (Blue wire) of brake circuit.
  • Open on ground wire of brake circuit.
  • Power back feed on Blue wire.
  • Trailer has electric over hydraulic brakes.
  • Faulty Control.
Q. Display shows "SH"
A. The control detects a short to ground on the electric brake wire (Blue wire).
Possible causes:
  • Short to ground on electric brake wire (Blue wire).
  • Trailer has electric over hydraulic brakes.
  • Faulty control.
Q. Display shows "OL"
A. The control detects excessive current on the electric brake wire (Blue wire).
Possible causes:
  • Short to ground on brake wire (Blue wire).
  • Trailer has electric over hydraulic brakes.
  • Faulty control.
Primus™
Q. Will the Primus work with electric over hydraulic brakes?
A. The Primus was designed to operate electric brakes that are activated by electro-magnets. They have not been tested for the use on electric over hydraulic brakes. Please contact the manufacturer of the hydraulic control unit for their recommendations.
Q. Display only goes to "4.7" when applying brakes.
A. The Primus detects an open ground on the White wire.
Possible causes:
  • Gain set to 4.7 volts.
  • Poor or no ground on the White wire of the Primus.
  • Faulty control.
Q. No "C" or display is blank with trailer connected.
A. The Primus has to have a complete circuit on the Blue wire to the brake magnets and then to ground, for the "C" to be displayed.
Possible causes:
  • Open on brake wire (Blue wire).
  • Open on ground wire of brake circuit.
  • Power back feed on Blue wire.
  • Trailer has electric over hydraulic brakes.
  • Faulty control.
Q. display shows "0.0" when applying brakes.
A. The Primus detects a short to ground on the electric brake wire (Blue wire).
Possible causes:
  • Gain set to minimum.
  • Short to ground on brake wire (Blue wire).
  • Trailer has electric over hydraulic brakes.
  • Faulty control.
Q. No braking with brake pedal, but OK with manual lever.
A. Possible causes:
  • Control not leveled properly
  • No power on Red wire of the control when brake pedal is depressed.
  • Faulty control.
Q. I cannot level the control.
A. Possible causes:
  • No trailer connected.
  • No power on Black wire of control.
  • Poor or no ground on White wire of control.
  • No power on Red wire of control when brake pedal is depressed.
  • Open in brake circuit.
  • Control mounted out of range.
  • Tow vehicle and trailer mis-wired.
  • Faulty control.
Sentinel®
Q. Will the Sentinel® work with electric over hydraulic brakes?
A. The Sentinel was designed to operate electric brakes that are activated by electro-magnets. It has not been tested on electric over hydraulic brakes. Please contact the manufacturer of the hydraulic control unit for their recommendations.
Q. All of the lights are flashing when brakes applied.
A. The Sentinel needs to have a complete circuit on the Blue wire to the brake magnets and then to ground and the proper resistance.
Possible causes:
  • Short to ground on the electric brake wire (Blue wire).
  • Trailer has electric over hydraulic brakes.
  • Faulty control.
Q. Trailer connected however there is no Green light.
A. The Sentinel has to have a complete circuit on the Blue wire to the brake magnet then to ground, with the proper resistance to turn the Green light on.
Possible causes:
  • No power on the black wire of the control.
  • Poor or no ground on the White wire of the control.
  • Open on the electric brake wire (Blue wire).
  • Open on ground wire in brake circuit.
  • Tow vehicle and trailer mis-wired.
  • Power back feed on brake wire (Blue wire).
  • Faulty control.
Q. No braking with brake pedal, but OK with manual lever.
A.Possible causes:
  • Control not leveled properly.
  • No power on the Red wire of control with brake pedal depressed.
  • Faulty control.
Q. Level light will not come on when applying the brake pedal.
A. Possible causes:
  • No power on Black wire of control.
  • Poor or no ground on White wire of control.
  • No power on the red wire of control, with brake pedal depressed.
  • Control not leveled properly.
  • Faulty control.
Voyager®
Q. No light after installation.
A. The Voyager needs to have a complete circuit on the Blue wire to the brake magnets then to ground for the Green LED to come on.
Possible causes:
  • No trailer connected.
  • No power on Black wire of control.
  • Poor or no ground on White wire of control.
  • Open on electric brake wire (Blue wire).
  • Open on the ground wire of the brake circuit.
  • Power back feed on Blue wire.
  • Tow vehicle and trailer mis-wired.
  • Faulty control.
Q. Have 12 volts on the Blue wire at all times.
A. This is normal operation. The Voyager sends a low current 12 volt signal checking for the trailer. Once the Voyager has a complete circuit to ground on the Blue wire, then the green LED will come on and the voltage will disappear.
Q. Will the Voyager work with electric over hydraulic brakes?
A. The Voyager was designed to operate electric brakes that are activated by electro-magnets. It has not been tested on electric over hydraulic brakes. Please contact the manufacturer of the hydraulic control unit for their recommendations.
Q. No Green LED with trailer connected.
A. The Voyager needs to have a complete circuit on the blue wire to the brake magnets then to ground to turn the Green LED on.
Possible causes:
  • Trailer not connected properly or completely.
  • No power on the Black wire of control.
  • Poor or no ground on the White wire of the control.
  • Open in the electric brake wire.
  • Open in ground wire of brake circuit.
  • Tow vehicle and trailer mis-wired.
  • Power back feed on the Blue wire.
  • Faulty control.
Q. The Green LED goes out when applying brake pedal.
A. Possible causes:
  • Power back feed on brake wire (Blue wire) from brake light circuit.
Q. The Green LED is on all the time, even without trailer connected.
A. The Voyager is detecting a complete circuit to ground on the Blue wire.
Possible causes:
  • Short to ground on brake wire (Blue wire).
  • Corrosion in trailer connector, on tow vehicle.
  • Faulty Control.
Q. Can not level the control
A. Possible causes:
  • No trailer connected.
  • No power on the Black wire of control.
  • Poor or no ground on White wire of control.
  • No power on Red wire of control with brake pedal depressed.
  • Open on electric brake wire.
  • Open on ground wire in brake circuit.
  • Control mounted out of range.
  • Tow vehicle and trailer mis-wired.
  • Faulty control.
Envoy®
Q. No light after installation.
A. The Envoy needs to have a complete circuit on the Blue wire to the brake magnets then to ground for the Green LED to come on.
Possible causes:
  • No trailer connected.
  • No power on Black wire of control.
  • Poor or no ground on White wire of control.
  • Open on electric brake wire (Blue wire).
  • Open on the ground wire of the brake circuit.
  • Power back feed on Blue wire.
  • Tow vehicle and trailer mis-wired.
  • Faulty control.
Q. Have 2 volts on the Blue wire at all times.
A. This is normal operation. The Envoy sends a low current 12 volt signal checking for the trailer. Once the Envoy has a complete circuit to ground on the Blue wire, then the green LED will come on and the voltage will disappear.
Q. Will the Envoy work with electric over hydraulic brakes?
A. The Envoy was designed to operate electric brakes that are activated by electro-magnets. It has not been tested on electric over hydraulic brakes. Please contact the manufacturer of the hydraulic control unit for their recommendations.
Q. No Green LED with trailer connected.
A. The Envoy needs to have a complete circuit on the blue wire to the brake magnets then to ground to turn the Green LED on.
Possible causes:
  • Trailer not connected properly or completely.
  • No power on the Black wire of control.
  • Poor or no ground on the White wire of the control.
  • Open in the electric brake wire.
  • Open in ground wire of brake circuit.
  • Tow vehicle and trailer mis-wired.
  • Power back feed on the Blue wire.
  • Faulty control.
Q. The Green LED goes out when applying brake pedal.
A. Possible causes:
  • Power back feed on brake wire (Blue wire) from brake light circuit.
Q. The Green LED is on all the time, even without trailer connected.
A. The Envoy is detecting a complete circuit to ground on the Blue wire.
Possible causes:
  • Short to ground on brake wire (Blue wire).
  • Corrosion in trailer connector, on tow vehicle.
  • Faulty Control.
Q. Can not level the control
A. Possible causes:
  • No trailer connected.
  • No power on the Black wire of control.
  • Poor or no ground on White wire of control.
  • No power on Red wire of control with brake pedal depressed.
  • Open on electric brake wire.
  • Open on ground wire in brake circuit.
  • Control mounted out of range.
  • Tow vehicle and trailer mis-wired.
  • Faulty control.
POD®
Q. No light after installation.
A. The POD® needs to have a complete circuit on the Blue wire to the brake magnets then to ground for the Green LED to come on.
Possible Causes:
  • No trailer connected.
  • No power on Black wire of control.
  • Poor or on White wire of control.
  • Open on electric brake wire (Blue wire).
  • Open on the ground wire of the brake circuit.
  • Power back feed on Blue wire.
  • Tow vehicle and trailer mis-wired.
  • Faulty control.
Q. Will the POD® work with electric over hydraulic brakes?
A. The POD was designed to operate electric brakes that are activated by electro-magnets. It has not been tested on electric over hydraulic brakes. Please contact the manufacturer of the hydraulic control unit for their recommendations.
Q. The control only puts out 5-volts with the gain at max and no trailer connected.
A. This is normal operation with no trailer or no load.
Q. The green LED is on at all times, even without trailer connected.
A. The POD® is detecting a complete circuit to ground on the Blue wire.
Possible Causes:
  • Short to ground on Blue wire.
  • Corrosion in trailer connector of tow vehicle.
  • Faulty control.
Q. The LED will not change from Green to Red with the pedal depressed or the manual activated.
A. Possible Causes:
  • Brake circuit (Blue wire) shorted to ground.
  • Corrosion in connector at back of tow vehicle.
  • Gain set to minimum.
  • Faulty control.
Q. The light will not go to Red, only Orange with the gain set to maximum.
A. Possible Causes:
  • Poor connection to ground on White wire.
  • Faulty control.
Q. No braking with brake pedal, OK with manual lever.
A. Possible Causes:
  • No power on Red wire of control with brake pedal depressed.
  • Faulty control.
Q. Green LED goes out when applying the brake pedal.
A. Possible Causes:
  • Power back feed on brake wire (Blue wire) from brake light circuit.
  • Faulty control.
Pilot® - #80550
Q. No "C" with the trailer connected.
A. The Pilot® has to have a complete circuit to ground through the brake magnets on the Blue wire to turn the "C" on.
Possible Causes:
  • No trailer connected.
  • Trailer not connected properly or completely.
  • No power on Black wire.
  • Poor or no ground on White wire of control.
  • Open on electric brake wire.
  • Open on ground wire of brake circuit.
  • Truck and Trailer mis-wired.
  • Power back feed on brake wire (Blue wire).
  • Faulty control.
Q. Will the Pilot® work with electric over hydraulic brakes?
A. The Pilot was designed to operate electric brakes that are activated by electro-magnets. It has not been tested on electric over hydraulic brakes. Please contact the manufacturer of the hydraulic control unit for their recommendations.
Q. The "C" is on at all times, even without trailer connected.
A. The Pilot® is detecting a complete circuit to ground on the Blue wire.
Possible Causes:
  • Short to ground on brake wire (Blue wire).
  • Corrosion in trailer connector of tow vehicle.
  • Faulty control.
Q. The numbers go higher than what I have the gain set at, with brake pedal applied.
A. Possible Causes:
  • Power back feed on brake wire (Blue wire) from brake light circuit.
Q. The control only puts out 9-volts with gain at max and no trailer connected.
A. This is normal operation wih no trailer connected or no electrical load.
Q. The display shows "0" with brake pedal depressed or the manual lever activated.
A. Possible Causes:
  • Short to ground on brake wire (Blue wire).
  • Corrosion in trailer connector of tow vehicle.
  • Gain set to minimum.
  • Faulty control.
Q. The display will only show 5.7 with the gain set at maximum.
A. Possible Causes:
  • Poor or no connection to ground on White wire of control.
  • Faulty control.
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