Installation Instructions for T-One® T-Connector for Subaru Impreza Hatchback

Part Numbers:

• 118744

Tools Required:

• Trim Panel Remover
• 10mm Socket & Ratchet or 10mm Wrench
• Drill (3/32” Drill Bit)
• Wire Crimpers
• Wire Cutters
• Phillips Head Screwdriver
• Test Probe

Step-by-Step Instructions:

1. Remove the Taillight Assemblies:

   • Open the tailgate and remove the vehicle’s taillight assemblies.
   • Carefully pull the taillights away from the vehicle, ensuring not to damage the alignment pins. Set aside.

2. Route the T-Connector Harness:

   • Route the harness containing the yellow wire underneath the vehicle and up through the opening between the vehicle bumper and body to the driver’s side taillight pocket.

3. Mount the Black Box Module:

   • On the driver’s side, locate a flat, out-of-the-way surface and mount the T-Connector’s black converter box using the provided double-sided tape.

4. Ground the White Wire:

   • Locate a suitable grounding point near the connector, such as an existing ground stud, or drill a 3/32” hole.
   • Secure the white wire using the provided eyelet and screw. Clean the area of dirt and rustproofing before securing.

   Caution: Verify what is behind the surface before drilling to prevent damage or injury.

5. Connect the Driver-Side T-Connector:

   • Separate the vehicle’s wiring connectors, being careful not to break the locking tabs.
   • Insert the T-Connector end with the yellow and brown wires between the vehicle wiring connectors and lock into place. Ensure all connectors are clean and secure.

   Warning: Ensure the module is mounted so the epoxy side faces downward to prevent water accumulation.

6. Route the Passenger-Side T-Connector:

   • Route the T-Connector end with the green wire through the opening on the passenger side, avoiding hot pipes, heat shields, fuel tank, or other points that may pinch or break the wire.

7. Connect the Passenger-Side T-Connector:

   • Repeat Step 5 on the passenger side using the T-Connector end containing the green wire.

8. Connect the Power Wire:

   • On the driver’s side, locate the black 12-gauge power wire from the T-Connector box.
   • Attach the provided black wire and route it along the exterior frame or existing wiring to the engine compartment, avoiding areas that may pinch or break the wire.

   Warning: Avoid routing the wire near hot pipes, heat shields, or fuel tank.

9. Connect to the Vehicle Battery:

   • Disconnect the vehicle’s Negative (-) battery cable.
   • Remove the fuse from the yellow fuse holder and attach the ring terminal to the Positive (+) battery cable.
   • Connect the other end of the fuse holder to the black 12-gauge wire using the provided yellow butt connector.

   Warning: Follow all warnings and cautions on the tow vehicle’s battery.

10. Secure the Wiring Harness:

    • Use the provided cable ties to secure the remainder of the T-Connector harness, avoiding areas that may pinch, cut, or melt the wire.

11. Reconnect the Battery and Test:

    • Reconnect the Negative (-) battery cable and install the 15-amp fuse into the fuse holder.
    • Test the installation with a test light or trailer. Reset the vehicle’s electrical system by temporarily removing the key from the ignition.

12. Reassemble the Vehicle:

    • Reinstall the plastic trim panels, threshold, storage covers, floor covering, and any other items removed during installation, ensuring no wires are pinched or damaged.

13. Attach the Flat-4 Mounting Bracket:

    • Attach the flat-4 mounting bracket to the trailer hitch using the provided screws and nuts.

Safety Notes:

• Overloading circuits can cause fires. Do not exceed stated product ratings or vehicle manufacturer specifications.
• Always wear safety glasses and follow 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 Subaru Impreza Hatchback

Part Numbers:

• 118744

Tools Required:

• Trim Panel Remover
• 10mm Socket & Ratchet or 10mm Wrench
• Drill (3/32” Drill Bit)
• Wire Crimpers
• Wire Cutters
• Phillips Head Screwdriver
• Test Probe

Step-by-Step Instructions:

1. Remove the Taillight Assemblies:

   • Open the tailgate and remove the vehicle’s taillight assemblies.
   • Carefully pull the taillights away from the vehicle, ensuring not to damage the alignment pins. Set aside.

2. Route the T-Connector Harness:

   • Route the harness containing the yellow wire underneath the vehicle and up through the opening between the vehicle bumper and body to the driver’s side taillight pocket.

3. Mount the Black Box Module:

   • On the driver’s side, locate a flat, out-of-the-way surface and mount the T-Connector’s black converter box using the provided double-sided tape.

4. Ground the White Wire:

   • Locate a suitable grounding point near the connector, such as an existing ground stud, or drill a 3/32” hole.
   • Secure the white wire using the provided eyelet and screw. Clean the area of dirt and rustproofing before securing.

   Caution: Verify what is behind the surface before drilling to prevent damage or injury.

5. Connect the Driver-Side T-Connector:

   • Separate the vehicle’s wiring connectors, being careful not to break the locking tabs.
   • Insert the T-Connector end with the yellow and brown wires between the vehicle wiring connectors and lock into place. Ensure all connectors are clean and secure.

   Warning: Ensure the module is mounted so the epoxy side faces downward to prevent water accumulation.

6. Route the Passenger-Side T-Connector:

   • Route the T-Connector end with the green wire through the opening on the passenger side, avoiding hot pipes, heat shields, fuel tank, or other points that may pinch or break the wire.

7. Connect the Passenger-Side T-Connector:

   • Repeat Step 5 on the passenger side using the T-Connector end containing the green wire.

8. Connect the Power Wire:

   • On the driver’s side, locate the black 12-gauge power wire from the T-Connector box.
   • Attach the provided black wire and route it along the exterior frame or existing wiring to the engine compartment, avoiding areas that may pinch or break the wire.

   Warning: Avoid routing the wire near hot pipes, heat shields, or fuel tank.

9. Connect to the Vehicle Battery:

   • Disconnect the vehicle’s Negative (-) battery cable.
   • Remove the fuse from the yellow fuse holder and attach the ring terminal to the Positive (+) battery cable.
   • Connect the other end of the fuse holder to the black 12-gauge wire using the provided yellow butt connector.

   Warning: Follow all warnings and cautions on the tow vehicle’s battery.

10. Secure the Wiring Harness:

    • Use the provided cable ties to secure the remainder of the T-Connector harness, avoiding areas that may pinch, cut, or melt the wire.

11. Reconnect the Battery and Test:

    • Reconnect the Negative (-) battery cable and install the 15-amp fuse into the fuse holder.
    • Test the installation with a test light or trailer. Reset the vehicle’s electrical system by temporarily removing the key from the ignition.

12. Reassemble the Vehicle:

    • Reinstall the plastic trim panels, threshold, storage covers, floor covering, and any other items removed during installation, ensuring no wires are pinched or damaged.

13. Attach the Flat-4 Mounting Bracket:

    • Attach the flat-4 mounting bracket to the trailer hitch using the provided screws and nuts.

Safety Notes:

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

Manufacturer Notes:

• For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.
• Refer to the vehicle owner’s manual for additional details.
• Store these instructions for future reference.

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

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.