Installation Instructions for Electric Trailer Brake Control Wiring Adapter
Part Number: 303600

Tools Required:

• Trim Panel Remover
• Flashlight

Step-by-Step Instructions:

Step 1: Vehicle Preparation

1. Ensure the vehicle is off, and the keys are removed from the ignition.

Step 2: Remove the Instrument Cluster Finish Panel

1. Locate the instrument cluster finish panel in the center of the dashboard on the driver side.
2. Use a trim panel remover to carefully pry the panel out and away from the dash.
   • Take care not to damage the trim or panel.
3. Unplug the housings attaching the panel.
   • Be careful not to damage the locking tabs.
4. Set the panel aside.

Step 3: Access the Brake Control Harness

Option 1:

1. Locate and remove two bolts that were exposed in Step 2.
2. Remove the bin and unplug the grey connector from the back of the bin.

Option 2:

1. For vehicles with a factory-installed brake controller, locate the large grey housing plugged into the back of the unit.
2. Additional harnesses may need to be unplugged to gain access to the location.

NOTE:
Disconnecting the factory-installed brake controller may trigger a fault code on the vehicle's message center.

Step 4: Connect the Brake Control Adapter

1. Plug the brake control adapter into the vehicle’s electric brake control harness connector.

Step 5: Route the Adapter

1. Identify a suitable routing path for the adapter to exit through the bottom of the dash.
   • Use a flashlight to locate a suitable hole for the adapter.

Step 6: Complete Installation

1. Follow the brake controller manufacturer’s instructions to complete the installation.
2. Mount the brake controller securely as directed.
3. Perform all test procedures as instructed.

Step 7: Reassemble

1. Reconnect any unused connectors back into their original housings.
2. Snap the instrument cluster finish panel back into place.

Notes:

• Vehicles not equipped with an OEM trailer tow package may require additional fuses and relays to complete the circuits.
  • These components are sold separately.
  • Refer to the vehicle owner’s manual for fuse and relay locations.

Safety Warnings:

1. Circuit Overload Warning:
   • DO NOT exceed the lower of:
     • The vehicle manufacturer’s towing rating, or
     • Maximum Capacity: 3 axles / 6 brakes (18 amps).
2. Overloading circuits can result in fires.
3. Always wear safety glasses and follow vehicle warnings and installation instructions.

Wiring Overview:

• Trailer Brake Controller (Output): Sends braking signals to the trailer brakes.
• Fused Battery Feed: Powers the brake controller.
• Stop Lamp Switch (Input): Provides the braking signal to the controller.
• Ground: Connects the system securely to the vehicle chassis.

End of Instructions

Installation Instructions for Electronic Brake Control

Product Information:

• Model: Electronic Brake Control for 2, 4, 6, & 8 Brake Applications
• Part Number: N8508220

Tools Required:

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

Components Included:

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

Mounting Instructions:

1. Select a Suitable Mounting Location:

   • Must be securely mounted to a solid surface.
   • Must be within easy reach of the driver.
   • Ensure the area behind the mounting location is clear before drilling.

2. Mark the Hole Locations:

   • Hold the mounting bracket in place.
   • Mark the holes using the slots in the bracket as a template.

3. Drill Mounting Holes:

   • Use a 1/8" drill bit to drill holes at the marked locations.

4. Secure the Bracket:

   • Use two self-tapping screws to secure the bracket.
   • Avoid over-tightening to prevent stripping the holes.

5. Mount the Brake Control Unit:

   • Secure the unit to the bracket using the remaining two screws.

Wiring Instructions:

1. Connect the Wires:

   • Black Wire: Vehicle Power (12V positive battery connection, use a 30A circuit breaker).
   • White Wire: Vehicle Ground (secure to a clean, bare metal surface).
   • Red Wire: Stop Light Switch (connect to the wire that activates only when the brake pedal is pressed).
   • Blue Wire: Trailer Brakes (connect to the brake wire at the trailer connector).

2. Verify Wiring Connections:

   • Use a circuit tester to confirm correct connections.

Controls and Operation:

1. Output (Gain) Control:

   • Adjusts the maximum power delivered to the trailer brakes.
   • Use the +/- buttons to increase or decrease output.
   • Display shows values from 0 to 10 (0 = minimum power, 10 = maximum power).

2. Manual Control:

   • Located on the front of the brake control unit.
   • Slide the control to manually apply the trailer brakes.
   • Use this feature to check or adjust brake performance.

3. Boost Control:

   • Provides more aggressive trailer braking.
   • Boost levels: b.1, b.2, and b.3.
   • Increase or decrease the boost by pressing the Boost Control button.

Setting Power to the Trailer Brakes:

1. Connect the trailer to the tow vehicle.
2. With the engine running, set the Output/Gain to approximately 5.0.
3. Drive at 25 mph on a dry, level surface.
4. Apply the Manual Control fully:
   • If trailer brakes lock up, decrease power.
   • If braking is insufficient, increase power.
5. Repeat until braking is smooth and effective, just below wheel lock-up.

Troubleshooting Guide:

Safety Notes:

• Do not mount the unit at an angle greater than -20° to +70° from level.
• Ensure all wiring connections are secure to avoid braking failures.
• Regularly inspect trailer brakes for wear and proper adjustment.

Technical Support:

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.

Warranty Information:

• Limited Warranty: Covers defects in materials and workmanship.
• Excludes misuse, improper installation, and normal wear and tear.

For complete warranty instructions, please download the full installation PDF.