Installation Instructions for Electric Trailer Brake Control Wiring Adapter
Part Number: 302500

Tools Required:

• Circuit Tester

Step-by-Step Instructions:

Step 1: Locate the Vehicle’s Electric Junction Box

1. Locate the vehicle’s black Electric Junction Box:
   • Inside the vehicle, underneath the dashboard, to the left of the steering column, just above the carpet.
2. Remove the junction box cover to expose the connection points.
3. Find the electric trailer brake connection point:
   • Located in the top row, second slot from the left.

Step 2: Plug in the Brake Control Adapter

1. Plug the brake control adapter into the mating connection point in the Electric Junction Box.
2. Use a circuit tester to verify that the adapter has battery (+) power supplied.

Step 3: Install Additional Wiring if Power Is Not Supplied

If power is not present at the Electric Junction Box, follow these steps:

A. Vehicle Brake Control Feed Wire (Blue):

1. Open the vehicle’s hood and locate the black Electrical Center Box on the driver’s side.
2. Remove the lid and cover of the Electrical Center Box.
3. Locate the blue brake control feed wire. This may require temporarily removing the vehicle’s support brace.

B. Vehicle Battery (+) Power Supply Wire (Red):

1. In the same location, find the red battery (+) power supply wire.
2. Attach and route the power wire as specified in the brake control manufacturer’s instructions.
3. Install an in-line fuse or circuit breaker to protect the circuit.

Step 4: Connect the Brake Controller

1. Plug the brake control adapter into the vehicle’s electric brake control harness connector.
2. Follow the brake control manufacturer’s installation instructions for wiring, mounting, and securing the brake controller.

Warnings:

1. Circuit Overload:
   • Do NOT exceed the lower of:
     • Manufacturer’s towing rating, or
     • Maximum Capacity: 4 axles / 8 brakes (24 amps).
2. Overloading circuits may cause fires or electrical damage.
3. Always follow the vehicle owner’s manual and brake control installation instructions.

Wiring Overview:

• Brake Control Feed (Blue): Sends brake signal to trailer brakes.
• Battery Power Supply (Red): Provides fused power to the brake controller.
• Ground: Grounds the controller to the vehicle.
• Stop Lamp Switch (Input): Signals braking input to the brake controller.

Final Notes:

• Verify all connections are secure and wires are properly routed away from sharp edges or heat sources.
• Use a circuit tester or connect a trailer to confirm proper operation.
• Periodically inspect the wiring system for damage or loose connections.

End of Instructions

Installation Instructions for Electronic Brake Control (2, 4, 6, & 8 Brake Applications)

Product Information:

• Part Number: N5504
• System Compatibility: 2, 4, 6, or 8 trailer brakes

Package Contents:

• Brake Control Unit
• Mounting Bracket
• Mounting Screws (#6 x 3/8") (Qty: 4)

Tools Required:

• Drill with 1/8" drill bit
• Screwdriver or 1/4" Nut Driver
• Wire Stripper/Cutter
• Crimp Tool
• Circuit Tester
• Assorted End Wrenches

Mounting Instructions:

1. Choose Mounting Location:

   • Ensure the location is solid and within easy reach of the driver.
   • Verify there is no obstruction behind the mounting panel.

2. Install the Bracket:

   • Use the mounting bracket as a template to mark the hole locations.
   • Drill two (2) 1/8" holes at the marked positions.
   • Secure the bracket using two self-tapping screws.

3. Install the Brake Control Unit:

   • Slide the Brake Control Unit into the bracket.
   • Secure it using the remaining two screws.

Wiring Instructions:

1. Black Wire (Battery +):

   • Connect to the positive battery terminal using a 30A auto-reset circuit breaker.

2. White Wire (Ground -):

   • Connect to a clean, bare metal surface on the vehicle chassis.

3. Red Wire (Stoplight Switch):

   • Connect to the cold side of the stoplight switch (voltage present only when the brake pedal is pressed).

4. Blue Wire (Trailer Brakes):

   • Connect to the brake output wire on the trailer’s 7-way connector.

Controls Overview:

1. Output (Gain) Control:

   • Adjusts the maximum braking power delivered to the trailer brakes.
   • Range: 0 (minimum) to 10 (maximum).

2. Sync Control:

   • Adjusts the aggressiveness of trailer braking:
     • + (More Aggressive)
     • – (Less Aggressive)

3. Manual Slide Control:

   • Manually applies the trailer brakes independent of the vehicle’s braking system.

4. LED Display:

   • Output Display: Shows the gain setting when activated.
   • Sync Display: Shows the sync setting when the brake pedal is pressed.

Setup and Testing:

1. Preliminary Adjustment:

   • Connect the trailer.
   • Press and hold the brake pedal.
   • Adjust the Gain Control to approximately 2.0.
   • Press the Sync + or – button to set sync to 4°.

2. Test Drive:

   • Drive at 25 mph in an open area.
   • Use the Manual Slide Control to test the trailer brakes:
     • If brakes are weak: Increase the Gain Control.
     • If brakes lock up: Decrease the Gain Control.

3. Fine-Tune the Sync Control:

   • For smoother stops: Adjust Sync + for more aggressive braking.
   • For less aggressive braking: Adjust Sync –.

4. Verify Performance:

   • Ensure stops are smooth and firm, without trailer wheel lock-up.

Troubleshooting Guide:

Safety Notes:

• Always test the brake control system before towing.
• Periodically inspect all connections and wiring for wear or damage.
• Do not exceed the vehicle manufacturer’s towing capacity.

Additional Assistance:

Attention: This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.

For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.