Installation Instructions for T-One® T-Connector for Hyundai Tucson

Part Numbers:

• 118812

Tools Required:

• Trim Panel Remover
• 10mm Socket & Ratchet or Wrench
• Drill (3/32” Drill Bit)
• Fish Tape
• Test Probe
• Utility Knife

Step-by-Step Instructions:

1. Remove the Taillight Assemblies:

   • Open the tailgate and carefully pull the taillights away from the vehicle to expose the wiring harness connectors behind each taillight.
   • Disconnect the connectors, ensuring not to break the locking tabs. Clean all connector surfaces to remove dirt.

2. Remove Interior Panels:

   • Inside the rear cargo area, temporarily remove all floor coverings, cargo trays, and the plastic threshold cover.
   • Warning: Do not remove the vehicle's side trim panels, as this may damage the clips holding the panels in place.

3. Locate the Grommet and Route Wires:

   • Locate the grommet under the vehicle on the driver’s side.
   • Remove the grommet and use fish tape to route the T-Connector ends and the power wire through the grommet hole from inside the vehicle. Seat the grommet securely.

   Note: If an existing vehicle wire passes through the grommet, carefully slit the provided T-Connector’s grommet to allow both wires to pass through. Add silicone rubber (not provided) to seal the grommet.

4. Connect the Driver-Side T-Connector:

   • Route the T-Connector end with the yellow and brown wires up to the driver-side taillight pocket.
   • Insert the yellow wire connector between the taillight socket and the vehicle wiring harness. Ensure all connections are fully seated with locking tabs secure.

5. Route and Connect the Passenger-Side T-Connector:

   • Route the T-Connector end with the green and red wires across the bumper bracket and into the passenger-side taillight pocket.
   • Secure the harness to the bumper using cable ties, avoiding hot pipes, heat shields, or sharp edges.
   • Repeat Step 4 for the passenger-side taillight.

6. Connect the Power Wire:

   • Remove the fuse from the yellow fuse holder. Attach the provided ring terminal to the Positive (+) battery cable and secure it.
   • Connect the other end of the fuse holder to the black 12-gauge wire using the provided yellow butt connector.
   • Route the black power wire along the vehicle’s frame to the rear, avoiding hot pipes, heat shields, fuel tanks, or other hazards.
   • Under the vehicle, connect the black power wire to the red 12-gauge power wire exiting the grommet using the provided butt connector. Apply heat to the splice until the tubing recovers and adhesive flows.

7. Ground the White Wire:

   • Locate a suitable grounding point near the connector, such as an existing ground stud.
   • Clean dirt and rustproofing from the area, drill a 3/32” hole, and secure the white wire using the provided eyelet and screw.
   • Caution: Verify what is behind any surface before drilling to prevent damage or injury.

8. Test the Installation:

   • Ensure all connections are complete. Test the installation with a test light or trailer to verify functionality.

9. Mount the Black Box:

   • Mount the T-One® T-Connector black box on the driver’s side using the provided double-sided tape.
   • Secure the remaining harness with cable ties to prevent damage or rattling.

10. Reassemble the Vehicle:

    • Reinstall the plastic trim panels, threshold cover, storage covers, and floor coverings.
    • Ensure no wires are pinched or damaged.

11. Store the 4-Flat Connector:

    • Store the 4-flat connector in the spare tire compartment when not in use.

Safety Notes:

• Overloading circuits can cause fires. Do not exceed stated product ratings or vehicle manufacturer specifications.
• Always wear safety glasses and follow all safety precautions during installation.

Manufacturer Notes:

• Refer to the vehicle owner’s manual and the instruction sheet for additional details.
• Store these instructions for future reference.

Installation Instructions for T-One® T-Connector for Various Vehicles

Part Numbers:

• 118812

Tools Required:

• Trim Panel Remover
• 10mm Socket & Ratchet or Wrench
• Drill (3/32” Drill Bit)
• Fish Tape
• Test Probe
• Utility Knife

Step-by-Step Instructions:

1. Remove the Taillight Assemblies:

   • Open the tailgate and carefully pull the taillights away from the vehicle to expose the wiring harness connectors behind each taillight.
   • Disconnect the connectors, ensuring not to break the locking tabs. Clean all connector surfaces to remove dirt.

2. Remove Interior Panels:

   • Inside the rear cargo area, temporarily remove all floor coverings, cargo trays, and the plastic threshold cover.
   • Warning: Do not remove the vehicle's side trim panels, as this may damage the clips holding the panels in place.

3. Locate the Grommet and Route Wires:

   • Locate the grommet under the vehicle on the driver’s side.
   • Remove the grommet and use fish tape to route the T-Connector ends and the power wire through the grommet hole from inside the vehicle. Seat the grommet securely.

   Note: If an existing vehicle wire passes through the grommet, carefully slit the provided T-Connector’s grommet to allow both wires to pass through. Add silicone rubber (not provided) to seal the grommet.

4. Connect the Driver-Side T-Connector:

   • Route the T-Connector end with the yellow and brown wires up to the driver-side taillight pocket.
   • Insert the yellow wire connector between the taillight socket and the vehicle wiring harness. Ensure all connections are fully seated with locking tabs secure.

5. Route and Connect the Passenger-Side T-Connector:

   • Route the T-Connector end with the green and red wires across the bumper bracket and into the passenger-side taillight pocket.
   • Secure the harness to the bumper using cable ties, avoiding hot pipes, heat shields, or sharp edges.
   • Repeat Step 4 for the passenger-side taillight.

6. Connect the Power Wire:

   • Remove the fuse from the yellow fuse holder. Attach the provided ring terminal to the Positive (+) battery cable and secure it.
   • Connect the other end of the fuse holder to the black 12-gauge wire using the provided yellow butt connector.
   • Route the black power wire along the vehicle’s frame to the rear, avoiding hot pipes, heat shields, fuel tanks, or other hazards.
   • Under the vehicle, connect the black power wire to the red 12-gauge power wire exiting the grommet using the provided butt connector. Apply heat to the splice until the tubing recovers and adhesive flows.

7. Ground the White Wire:

   • Locate a suitable grounding point near the connector, such as an existing ground stud.
   • Clean dirt and rustproofing from the area, drill a 3/32” hole, and secure the white wire using the provided eyelet and screw.
   • Caution: Verify what is behind any surface before drilling to prevent damage or injury.

8. Test the Installation:

   • Ensure all connections are complete. Test the installation with a test light or trailer to verify functionality.

9. Mount the Black Box:

   • Mount the T-One® T-Connector black box on the driver’s side using the provided double-sided tape.
   • Secure the remaining harness with cable ties to prevent damage or rattling.

10. Reassemble the Vehicle:

    • Reinstall the plastic trim panels, threshold cover, storage covers, and floor coverings.
    • Ensure no wires are pinched or damaged.

11. Store the 4-Flat Connector:

    • Store the 4-flat connector in the spare tire compartment when not in use.

Safety Notes:

• Overloading circuits can cause fires. Do not exceed stated product ratings or vehicle manufacturer specifications.
• Always wear safety glasses and follow all safety precautions during installation.

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.

Manufacturer Notes:

• Refer to the vehicle owner’s manual and the instruction sheet for additional details.
• Store these instructions for future reference.

Warranty Information:

• For complete warranty instructions, 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.

Installation Instructions for 4-Way to 7-Way Adapter and Brake Control Wiring

Tools Required:

• Phillips Head Screwdriver
• Drill with 3/32" Drill Bit
• 10mm Socket & Ratchet or Wrench
• Wire Crimpers
• Wire Cutters
• Test Light or Multimeter
• Cable Ties

Part 1: Install the 4-Way to 7-Way Adapter

Step-by-Step Instructions:

1. Mount the Adapter:

   • Choose a suitable mounting point on the vehicle, typically near the hitch.
   • Use the provided bracket and screws to secure the adapter.

2. Connect the 4-Flat Plug:

   • Plug the 4-flat connector on the adapter into the existing 4-flat plug on the vehicle.
   • This connection enables tail lights, left turn, and right turn signals.

3. Ground the Adapter:

   • Locate a clean, solid grounding point near the adapter.
   • Drill a 3/32" hole if necessary and secure the white ground wire from the adapter using the provided screw and eyelet.

4. Leave Additional Wires Disconnected:

   • The following wires will remain disconnected until Part 2:
     • Black Wire: Power from the battery.
     • Blue Wire: Brake control output.
     • Yellow Wire: Reverse light (optional; leave disconnected unless needed).

5. Test Initial Connection:

   • Use a test light or trailer to verify functionality of the 4-way connections (tail lights, turn signals).

Part 2: Install Brake Control Wiring

Step-by-Step Instructions:

1. Mount Circuit Breakers:

   • Install two 30A circuit breakers on the firewall or another suitable location near the battery.
   • Use self-tapping screws to mount them securely.

2. Route Power Wires:

   • Connect the black 12-gauge wire from the 7-way adapter to the auxiliary side of one circuit breaker (this powers the 7-way socket).
   • Run a heavy-gauge wire from the battery's positive terminal to the battery side of this circuit breaker, using a ring terminal.
   • Run another heavy-gauge wire from the battery's positive terminal to the auxiliary side of the second circuit breaker (for the brake controller).

3. Install the Brake Controller:

   • Mount the brake controller under the dash on a firm surface.
   • Use the following connections:
     • Red Wire: Connect to the cold side of the brake switch (active only when the brake pedal is pressed).
     • Blue Wire: Connect to the blue wire on the 7-way adapter for trailer brakes.
     • White Wire: Connect to a solid ground point on the vehicle body.
     • Black Wire: Connect to the auxiliary side of the second 30A circuit breaker (provides power to the brake controller).

4. Optional: Connect Reverse Light Circuit:

   • If the trailer has a reverse light circuit, connect the yellow wire from the 7-way adapter to the vehicle’s reverse light circuit.

5. Reconnect the Battery:

   • Reattach the negative battery cable and ensure all connections are secure.
   • Insert the fuses into both circuit breakers.

6. Secure All Wires:

   • Use cable ties to secure all loose wires and prevent damage or rattling.

7. Test the System:

   • Verify functionality of all circuits (running lights, turn signals, brake lights, and brake controller output).
   • If applicable, test the reverse light circuit.

Notes:

• Most installations will only require connecting the black and blue wires from the 7-way adapter.
• Leave the yellow wire disconnected unless the trailer has a reverse light or surge brake lockout circuit.
• Always adhere to safety guidelines and verify all connections before use.

Warning: Incorrect wiring can cause damage to the vehicle or trailer. Test all connections carefully before use.

Installation Instructions for 4-Way to 7-Way Adapter and Brake Control Wiring

Tools Required:

• Phillips Head Screwdriver
• Drill with 3/32" Drill Bit
• 10mm Socket & Ratchet or Wrench
• Wire Crimpers
• Wire Cutters
• Test Light or Multimeter
• Cable Ties

Part 1: Install the 4-Way to 7-Way Adapter

Step-by-Step Instructions:

1. Mount the Adapter:

   • Choose a suitable mounting point on the vehicle, typically near the hitch.
   • Use the provided bracket and screws to secure the adapter.

2. Connect the 4-Flat Plug:

   • Plug the 4-flat connector on the adapter into the existing 4-flat plug on the vehicle.
   • This connection enables tail lights, left turn, and right turn signals.

3. Ground the Adapter:

   • Locate a clean, solid grounding point near the adapter.
   • Drill a 3/32" hole if necessary and secure the white ground wire from the adapter using the provided screw and eyelet.

4. Leave Additional Wires Disconnected:

   • The following wires will remain disconnected until Part 2:
     • Black Wire: Power from the battery.
     • Blue Wire: Brake control output.
     • Yellow Wire: Reverse light (optional; leave disconnected unless needed).

5. Test Initial Connection:

   • Use a test light or trailer to verify functionality of the 4-way connections (tail lights, turn signals).

Part 2: Install Brake Control Wiring

Step-by-Step Instructions:

1. Mount Circuit Breakers:

   • Install two 30A circuit breakers on the firewall or another suitable location near the battery.
   • Use self-tapping screws to mount them securely.

2. Route Power Wires:

   • Connect the black 12-gauge wire from the 7-way adapter to the auxiliary side of one circuit breaker (this powers the 7-way socket).
   • Run a heavy-gauge wire from the battery's positive terminal to the battery side of this circuit breaker, using a ring terminal.
   • Run another heavy-gauge wire from the battery's positive terminal to the auxiliary side of the second circuit breaker (for the brake controller).

3. Install the Brake Controller:

   • Mount the brake controller under the dash on a firm surface.
   • Use the following connections:
     • Red Wire: Connect to the cold side of the brake switch (active only when the brake pedal is pressed).
     • Blue Wire: Connect to the blue wire on the 7-way adapter for trailer brakes.
     • White Wire: Connect to a solid ground point on the vehicle body.
     • Black Wire: Connect to the auxiliary side of the second 30A circuit breaker (provides power to the brake controller).

4. Optional: Connect Reverse Light Circuit:

   • If the trailer has a reverse light circuit, connect the yellow wire from the 7-way adapter to the vehicle’s reverse light circuit.

5. Reconnect the Battery:

   • Reattach the negative battery cable and ensure all connections are secure.
   • Insert the fuses into both circuit breakers.

6. Secure All Wires:

   • Use cable ties to secure all loose wires and prevent damage or rattling.

7. Test the System:

   • Verify functionality of all circuits (running lights, turn signals, brake lights, and brake controller output).
   • If applicable, test the reverse light circuit.

Notes:

• Most installations will only require connecting the black and blue wires from the 7-way adapter.
• Leave the yellow wire disconnected unless the trailer has a reverse light or surge brake lockout circuit.
• Always adhere to safety guidelines and verify all connections before use.

Warning: Incorrect wiring can cause damage to the vehicle or trailer. Test all connections carefully before use.

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.

Warranty Information:

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

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.