Installation Instructions for T-One® T-Connector for Toyota Prius Prime

Part Numbers:

• 118842

Tools Required:

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

Step-by-Step Instructions:

1. Open Rear Hatch:

   • Open the rear hatch and remove all cargo area floor coverings.
   • In the center of the cargo area, locate and remove the push pins to detach the center cargo panel.

2. Remove Trim Panel on Driver's Side:

   • Locate the small round cover on the driver’s side and use a 10mm socket to remove the trim panel retaining bolt.
   • Carefully pull back the panel to access the vehicle's taillight wiring.

3. Connect the Driver-Side T-Connector:

   • Insert the T-One® Connector end with the brown wire between the vehicle wiring connectors and lock into place.
   • Be careful not to damage the locking tabs, ensuring connectors are fully inserted with tabs secure.

4. Mount the Black Box Module:

   • Mount the T-One® Connector black box using the provided double-sided tape.
   • Secure the remaining harness with the provided cable ties to prevent damage or rattling, avoiding areas that could pinch or cut the wire.

   Caution: Verify what is behind any surface prior to drilling to avoid vehicle or personal injury.

5. Ground the White Wire:

   • Locate a suitable grounding point, such as an existing ground stud, or drill a 3/32” hole.
   • Secure the white wire using the provided eyelet and screw. Avoid drilling into the vehicle floor or bed and clean the area of dirt and rustproofing.

6. Route the Harness:

   • Route the harness with the yellow wire and black power wire along the threshold to the center of the cargo area.
   • Locate the grommet and carefully slit it. Insert the harness through the slit in the grommet.

7. Connect the Rear Bumper Wires:

   • Underneath the vehicle near the rear bumper cover on the driver’s side, locate the mating connectors.
   • Insert the T-One® Connector end with the green and yellow wires between the vehicle wiring connectors and lock into place.

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

8. Route the Power Wire:

   • From the rear of the vehicle, route the black 12-gauge wire forward along the frame rail, avoiding hot pipes, heat shields, and points that may pinch or break the wire.

9. Connect to the Vehicle Battery:

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

10. Reconnect the Battery and Test:

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

11. Reassemble the Vehicle:

    • Reinstall the plastic trim panels, threshold, storage covers, floor coverings, and other items removed during installation. Be careful not to pinch or cut the wires.

12. Store the 4-Flat Connector:

    • Secure all loose wires and mount the trailer tow harness in an accessible location using a bracket or electrical box.

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 Toyota Prius Prime

Part Numbers:

• 118842

Tools Required:

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

Step-by-Step Instructions:

1. Open Rear Hatch:

   • Open the rear hatch and remove all cargo area floor coverings.
   • In the center of the cargo area, locate and remove the push pins to detach the center cargo panel.

2. Remove Trim Panel on Driver's Side:

   • Locate the small round cover on the driver’s side and use a 10mm socket to remove the trim panel retaining bolt.
   • Carefully pull back the panel to access the vehicle's taillight wiring.

3. Connect the Driver-Side T-Connector:

   • Insert the T-One® Connector end with the brown wire between the vehicle wiring connectors and lock into place.
   • Be careful not to damage the locking tabs, ensuring connectors are fully inserted with tabs secure.

4. Mount the Black Box Module:

   • Mount the T-One® Connector black box using the provided double-sided tape.
   • Secure the remaining harness with the provided cable ties to prevent damage or rattling, avoiding areas that could pinch or cut the wire.

   Caution: Verify what is behind any surface prior to drilling to avoid vehicle or personal injury.

5. Ground the White Wire:

   • Locate a suitable grounding point, such as an existing ground stud, or drill a 3/32” hole.
   • Secure the white wire using the provided eyelet and screw. Avoid drilling into the vehicle floor or bed and clean the area of dirt and rustproofing.

6. Route the Harness:

   • Route the harness with the yellow wire and black power wire along the threshold to the center of the cargo area.
   • Locate the grommet and carefully slit it. Insert the harness through the slit in the grommet.

7. Connect the Rear Bumper Wires:

   • Underneath the vehicle near the rear bumper cover on the driver’s side, locate the mating connectors.
   • Insert the T-One® Connector end with the green and yellow wires between the vehicle wiring connectors and lock into place.

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

8. Route the Power Wire:

   • From the rear of the vehicle, route the black 12-gauge wire forward along the frame rail, avoiding hot pipes, heat shields, and points that may pinch or break the wire.

9. Connect to the Vehicle Battery:

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

10. Reconnect the Battery and Test:

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

11. Reassemble the Vehicle:

    • Reinstall the plastic trim panels, threshold, storage covers, floor coverings, and other items removed during installation. Be careful not to pinch or cut the wires.

12. Store the 4-Flat Connector:

    • Secure all loose wires and mount the trailer tow harness in an accessible location using a bracket or electrical box.

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.

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.

Warranty Information:

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