Installation Instructions for T-Connector Adapter

Part Numbers:

• 118390

Wiring Access Location:

• Rear taillight assemblies and under the vehicle near the bumper.

Tools Required:

• Trim panel remover.
• Wire crimpers.
• Wire cutters.
• Pliers.

Step-by-Step Instructions:

1. Access Taillight Wiring:

   • Open the tailgate and remove the vehicle’s right-side taillight assembly by removing the two clips holding it in place.
   • Carefully pry the housing away from the vehicle, ensuring the alignment tabs are not broken.
   • Repeat the process for the left-side taillight assembly.

2. Disconnect Wiring Harness:

   • Slide the red locking tab on the vehicle wiring harness connectors to the unlocked position.
   • Disconnect the wiring harness from both taillight sockets.

3. Install T-Connector:

   • Plug the T-Connector end with the yellow wire between the driver’s side taillight socket and the vehicle wiring harness.
   • Ensure the connectors are fully inserted with locking tabs secure.

4. Route the Wiring:

   • Route the T-Connector end with the green wire and the 4-flat connector down through the opening between the vehicle bumper and body.
   • Route the green wire across to the passenger side and up through the opening, avoiding hot pipes, heat shields, or any other areas that could pinch or damage the wire.
   • Repeat step 3 for the passenger’s side using the green wire.

5. Power Connection:

   • Disconnect the vehicle’s negative (-) battery cable.
   • Cut the yellow fuse holder wire and attach the ring terminal. Secure it to the vehicle’s positive (+) battery cable.
   • Connect the other end of the fuse holder to the black 12-gauge wire using the supplied yellow butt connector.

6. Route Power Wire:

   • Route the black 12-gauge wire from the front of the vehicle along the frame rail to the rear driver’s side, avoiding hot pipes, heat shields, and other potential hazards.

7. Connect Power Wire:

   • Locate the opening between the rear bumper and body. Route the black wire through the opening and attach it to the red wire from the T-Connector black box using the supplied yellow butt connector.

8. Finalize Power:

   • Reconnect the vehicle’s negative (-) battery cable.
   • Install the 10-amp fuse into the fuse holder.

9. Secure Wiring and Black Box:

   • Secure all loose wiring. Clean a flat surface behind the driver’s side taillight assembly using a mixture of rubbing alcohol and water.
   • Mount the T-Connector black box using the provided double-sided tape.

10. Reinstall Components:

    • Reinstall the taillight housing assemblies, positioning the wiring harness between the housing and the vehicle body.
    • Secure the remainder of the T-Connector harness under the bumper with the provided cable ties.

11. Testing and Final Steps:

    • Test the installation with a test light or trailer.
    • Mount the 4-flat connector in a suitable location under the vehicle. Bracket not included.

    Specifications:

    • Max. stop/turn light: 1 per side (2.1 amps).
    • Max. tail lights: (4.2 amps).

Hardware List:

• T-Connector adapter.
• Yellow fuse holder with 10-amp fuse.
• Eyelet and screw.
• Double-sided tape.
• Cable ties.

Safety Notes:

• Ensure all connections are secure to avoid circuit overload.
• Test thoroughly after installation to confirm functionality.

Manufacturer Notes:

• Follow all warnings and installation instructions provided.
• Use a test light or trailer to confirm proper installation.
• Refer to the vehicle owner’s manual for additional details.

Installation Instructions for T-Connector Adapter

Part Numbers:

• 118390

Wiring Access Location:

• Rear taillight assemblies and under the vehicle near the bumper.

Tools Required:

• Trim panel remover
• Wire crimpers
• Wire cutters
• Pliers

Step-by-Step Instructions:

1. Access Taillight Wiring:

   • Open the tailgate and remove the vehicle’s right-side taillight assembly by removing the two clips holding it in place.
   • Carefully pry the housing away from the vehicle, ensuring the alignment tabs are not broken.
   • Repeat the process for the left-side taillight assembly.

2. Disconnect Wiring Harness:

   • Slide the red locking tab on the vehicle wiring harness connectors to the unlocked position.
   • Disconnect the wiring harness from both taillight sockets.

3. Install T-Connector:

   • Plug the T-Connector end with the yellow wire between the driver’s side taillight socket and the vehicle wiring harness.
   • Ensure the connectors are fully inserted with locking tabs secure.

4. Route the Wiring:

   • Route the T-Connector end with the green wire and the 4-flat connector down through the opening between the vehicle bumper and body.
   • Route the green wire across to the passenger side and up through the opening, avoiding hot pipes, heat shields, or any other areas that could pinch or damage the wire.
   • Repeat step 3 for the passenger’s side using the green wire.

5. Power Connection:

   • Disconnect the vehicle’s negative (-) battery cable.
   • Cut the yellow fuse holder wire and attach the ring terminal. Secure it to the vehicle’s positive (+) battery cable.
   • Connect the other end of the fuse holder to the black 12-gauge wire using the supplied yellow butt connector.

6. Route Power Wire:

   • Route the black 12-gauge wire from the front of the vehicle along the frame rail to the rear driver’s side, avoiding hot pipes, heat shields, and other potential hazards.

7. Connect Power Wire:

   • Locate the opening between the rear bumper and body. Route the black wire through the opening and attach it to the red wire from the T-Connector black box using the supplied yellow butt connector.

8. Finalize Power:

   • Reconnect the vehicle’s negative (-) battery cable.
   • Install the 10-amp fuse into the fuse holder.

9. Secure Wiring and Black Box:

   • Secure all loose wiring. Clean a flat surface behind the driver’s side taillight assembly using a mixture of rubbing alcohol and water.
   • Mount the T-Connector black box using the provided double-sided tape.

10. Reinstall Components:

    • Reinstall the taillight housing assemblies, positioning the wiring harness between the housing and the vehicle body.
    • Secure the remainder of the T-Connector harness under the bumper with the provided cable ties.

11. Testing and Final Steps:

    • Test the installation with a test light or trailer to verify:
      • Left Turn Signal
      • Right Turn Signal
      • Brake Lights
      • Running Lights
    • Mount the 4-flat connector in a suitable location under the vehicle. (Bracket not included.)

Specifications:

• Max Stop/Turn Light: 2.1 amps per side
• Max Tail Lights: 4.2 amps

Hardware List:

• T-Connector adapter
• Yellow fuse holder with 10-amp fuse
• Eyelet and screw
• Double-sided tape
• Cable ties

Safety Notes:

• Ensure all connections are secure to avoid circuit overload.
• Test thoroughly after installation to confirm functionality.
• Periodically inspect the wiring harness for wear or damage.

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.

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.

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.