Installation Instructions for Electric Trailer Brake Control Wiring Adapter
Part Number: 302300

Tools Required:

• 10mm Socket & Ratchet or 10mm Wrench
• 1/4” Socket
• Wire Crimpers
• Wire Cutters
• Test Probe

Step-by-Step Instructions:

Step 1: Locate the Vehicle’s Brake Control Harness

1. Locate the electric brake control harness connector under the dashboard:
   • It is positioned left of the steering column, near the emergency brake pedal.
2. Identify the connectors:
   • A 4-pin connector (matches the adapter).
   • A 2-pin connector just above the brake pedal.

Step 2: Plug in the Brake Control Adapter

1. Plug the brake control adapter into the vehicle’s:
   • 4-pin connector (under the dash).
   • 2-pin connector (above the brake pedal).
2. Follow all brake control manufacturer’s installation instructions for wiring and mounting the brake controller.

Step 3: Locate the 7-Way Trailer Harness Connector

1. Locate the 7-way trailer harness connector:
   • It is positioned under the vehicle, behind the bumper, near the center.
2. Carefully disconnect the connector without damaging the locking tabs.
3. Ensure all connector surfaces are clean and free of dirt.

Step 4: Install the Adapter

1. Plug the adapter between the factory socket and the 7-way trailer harness connector.
2. Ensure all connectors are fully seated and locking tabs are engaged.

Step 5: Mount the Adapter Box

1. Locate a flat mounting surface near the 7-way trailer connector.
2. Secure the black adapter box using appropriate fasteners.
3. Position the box with the epoxy side facing downward to prevent water buildup.

Step 6: Route the Black 12-Gauge Wire

1. Connect the black 12-gauge wire to the adapter box using the supplied yellow butt connector.
2. Route the black wire along the vehicle frame, avoiding:
   • Hot pipes
   • Heat shields
   • Fuel tanks
   • Areas that may pinch or cut the wire.
3. Route the wire into the engine compartment, up to the vehicle’s battery.

Step 7: Connect to the Battery

1. Disconnect the vehicle’s Negative (-) battery cable.
2. If not already done, cut the fuse holder wire and attach the ring terminal.
3. Secure the ring terminal to the vehicle’s Positive (+) battery cable.
4. Use the supplied yellow butt connector to connect the fuse holder to the black 12-gauge wire.

Step 8: Finalize Wiring

1. Reconnect the vehicle’s Negative (-) battery cable.
2. Install a 15-amp fuse into the fuse holder.
3. Verify all wiring is secure and free from pinch points, heat sources, or sharp edges.

Step 9: Test the Installation

1. Use a test light or connect a trailer to verify the 7-way connector functions properly.
2. For initial testing, reset the vehicle’s electrical system by temporarily removing the ignition key.

Safety Warnings:

1. Do NOT overload the circuit:
   • Maximum Capacity: 4 axles / 8 brakes (24 amps).
2. Route wires carefully to avoid areas that may cut, pinch, or melt the wire.
3. Always read and follow vehicle manufacturer’s guidelines for towing and electrical systems.
4. Periodically inspect all connections for signs of wear or damage.

Final Notes:

• Ensure the adapter box is mounted securely with the epoxy side facing downward.
• Use cable ties to secure excess wiring and prevent rattling or wire damage.
• Refer to the vehicle owner’s manual for fuse or relay requirements if additional components are needed.

End of Instructions

Installation Instructions for Electric Trailer Brake Control Wiring Adapter
Part Number: 302300

Tools Required:

• 10mm Socket & Ratchet or 10mm Wrench
• 1/4” Socket
• Wire Crimpers
• Wire Cutters
• Test Probe

Step-by-Step Instructions:

Step 1: Locate the Vehicle’s Brake Control Harness

1. Locate the electric brake control harness connector under the dashboard:
   • It is positioned left of the steering column, near the emergency brake pedal.
2. Identify the connectors:
   • A 4-pin connector (matches the adapter).
   • A 2-pin connector just above the brake pedal.

Step 2: Plug in the Brake Control Adapter

1. Plug the brake control adapter into the vehicle’s:
   • 4-pin connector (under the dash).
   • 2-pin connector (above the brake pedal).
2. Follow all brake control manufacturer’s installation instructions for wiring and mounting the brake controller.

Step 3: Locate the 7-Way Trailer Harness Connector

1. Locate the 7-way trailer harness connector:
   • It is positioned under the vehicle, behind the bumper, near the center.
2. Carefully disconnect the connector without damaging the locking tabs.
3. Ensure all connector surfaces are clean and free of dirt.

Step 4: Install the Adapter

1. Plug the adapter between the factory socket and the 7-way trailer harness connector.
2. Ensure all connectors are fully seated and locking tabs are engaged.

Step 5: Mount the Adapter Box

1. Locate a flat mounting surface near the 7-way trailer connector.
2. Secure the black adapter box using appropriate fasteners.
3. Position the box with the epoxy side facing downward to prevent water buildup.

Step 6: Route the Black 12-Gauge Wire

1. Connect the black 12-gauge wire to the adapter box using the supplied yellow butt connector.
2. Route the black wire along the vehicle frame, avoiding:
   • Hot pipes
   • Heat shields
   • Fuel tanks
   • Areas that may pinch or cut the wire.
3. Route the wire into the engine compartment, up to the vehicle’s battery.

Step 7: Connect to the Battery

1. Disconnect the vehicle’s Negative (-) battery cable.
2. If not already done, cut the fuse holder wire and attach the ring terminal.
3. Secure the ring terminal to the vehicle’s Positive (+) battery cable.
4. Use the supplied yellow butt connector to connect the fuse holder to the black 12-gauge wire.

Step 8: Finalize Wiring

1. Reconnect the vehicle’s Negative (-) battery cable.
2. Install a 15-amp fuse into the fuse holder.
3. Verify all wiring is secure and free from pinch points, heat sources, or sharp edges.

Step 9: Test the Installation

1. Use a test light or connect a trailer to verify the 7-way connector functions properly.
2. For initial testing, reset the vehicle’s electrical system by temporarily removing the ignition key.

Safety Warnings:

1. Do NOT overload the circuit:
   • Maximum Capacity: 4 axles / 8 brakes (24 amps).
2. Route wires carefully to avoid areas that may cut, pinch, or melt the wire.
3. Always read and follow vehicle manufacturer’s guidelines for towing and electrical systems.
4. Periodically inspect all connections for signs of wear or damage.

Final Notes:

• Ensure the adapter box is mounted securely with the epoxy side facing downward.
• Use cable ties to secure excess wiring and prevent rattling or wire damage.
• Refer to the vehicle owner’s manual for fuse or relay requirements if additional components are needed.

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.