Installation Instructions for T-One® T-Connector for Ford Transit

Part Numbers:

• 118643

Tools Required:

• Trim Panel Remover
• Drill (3/32” Drill Bit)
• Phillips Head Screwdriver
• Test Probe
• Flat Screwdriver

Step-by-Step Instructions:

1. Remove the Taillights:

   • Open the rear door.
   • Remove the screws securing the taillights on both the driver and passenger sides.
   • Carefully pull the taillights away from the vehicle, avoiding damage to alignment pins.

2. Disconnect the Wiring Harness:

   • On both sides, locate the vehicle’s taillight wiring harness.
   • Separate the connector carefully, ensuring not to break the locking tabs.
   • Ensure all connector surfaces are clean and free of dirt.

3. Install the Driver-Side T-Connector:

   • Insert the T-One® T-Connector end with the yellow wire between the vehicle’s wiring connectors on the driver’s side.
   • Ensure the connectors are fully inserted with locking tabs in place.

4. Route the Green Wire to the Passenger Side:

   • Route the harness containing the green wire and 4-flat connector through the opening behind the driver’s side taillight.
   • Continue routing the green wire underneath the vehicle to the passenger side and up through the opening behind the passenger’s taillight.

   Warning: Avoid hot pipes, heat shields, fuel tanks, or other areas where the wire could be pinched or damaged.

5. Install the Passenger-Side T-Connector:

   • Repeat Step 3 on the passenger side using the T-One® T-Connector with the green wire.

6. Ground the White Wire:

   • Locate a suitable grounding point on the driver’s side near the connectors.
   • Drill a 3/32” hole and secure the white wire using the provided screw and eyelet.

   Caution: Verify the area behind the surface before drilling to avoid vehicle damage or injury.

7. Connect the Power Wire:

   • Open the hood and locate the positive 12V power post. Using a 15mm socket, remove the nut.
   • Attach the provided ring terminal to the positive battery post using the nut removed earlier.

8. Prepare the Fuse Holder:

   • Remove the fuse from the yellow fuse holder.
   • Attach one end of the fuse holder to the positive battery post and the other end to the black 12-gauge wire using the yellow butt connector.

9. Route the Black Power Wire:

   • Route the black wire from the engine compartment to the rear driver’s side of the vehicle.
   • Connect the black wire to the power wire on the T-One® T-Connector black box using the yellow butt connector.

   Warning: Avoid routing near hot pipes, heat shields, or fuel tanks.

10. Reconnect the Battery:

    • Reconnect the vehicle’s negative (-) battery cable.
    • Install the 15-amp fuse into the fuse holder.

    Warning: All connections must be complete for the trailer tow harness to function properly. Test the installation using a test light or trailer.

11. Mount the T-One® Black Box:

    • Mount the black box on the driver’s side using the provided double-sided tape.
    • Secure the remainder of the T-One® harness using the provided cable ties.

    Warning: Ensure the epoxy side of the black box is facing downward to prevent water buildup.

12. Reinstall the Taillights:

    • Reinstall the taillight assemblies, ensuring the wiring is positioned properly.

13. Mount the 4-Flat Connector:

    • Secure the 4-flat connector in an accessible location using a bracket or electrical box (not included).

Specifications:

• Max. stop/turn light: 4.2 amps per side
• Max. tail lights: 7.5 amps

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 information.
• Store these instructions for future reference.

Installation Instructions for T-One® T-Connector for Ford Transit

Part Numbers:

• 118643

Tools Required:

• Trim Panel Remover
• Drill (3/32” Drill Bit)
• Phillips Head Screwdriver
• Test Probe
• Flat Screwdriver

Step-by-Step Instructions:

1. Remove the Taillights:

   • Open the rear door.
   • Remove the screws securing the taillights on both the driver and passenger sides.
   • Carefully pull the taillights away from the vehicle, avoiding damage to alignment pins.

2. Disconnect the Wiring Harness:

   • On both sides, locate the vehicle’s taillight wiring harness.
   • Separate the connector carefully, ensuring not to break the locking tabs.
   • Ensure all connector surfaces are clean and free of dirt.

3. Install the Driver-Side T-Connector:

   • Insert the T-One® T-Connector end with the yellow wire between the vehicle’s wiring connectors on the driver’s side.
   • Ensure the connectors are fully inserted with locking tabs in place.

4. Route the Green Wire to the Passenger Side:

   • Route the harness containing the green wire and 4-flat connector through the opening behind the driver’s side taillight.
   • Continue routing the green wire underneath the vehicle to the passenger side and up through the opening behind the passenger’s taillight.

   Warning: Avoid hot pipes, heat shields, fuel tanks, or other areas where the wire could be pinched or damaged.

5. Install the Passenger-Side T-Connector:

   • Repeat Step 3 on the passenger side using the T-One® T-Connector with the green wire.

6. Ground the White Wire:

   • Locate a suitable grounding point on the driver’s side near the connectors.
   • Drill a 3/32” hole and secure the white wire using the provided screw and eyelet.

   Caution: Verify the area behind the surface before drilling to avoid vehicle damage or injury.

7. Connect the Power Wire:

   • Open the hood and locate the positive 12V power post. Using a 15mm socket, remove the nut.
   • Attach the provided ring terminal to the positive battery post using the nut removed earlier.

8. Prepare the Fuse Holder:

   • Remove the fuse from the yellow fuse holder.
   • Attach one end of the fuse holder to the positive battery post and the other end to the black 12-gauge wire using the yellow butt connector.

9. Route the Black Power Wire:

   • Route the black wire from the engine compartment to the rear driver’s side of the vehicle.
   • Connect the black wire to the power wire on the T-One® T-Connector black box using the yellow butt connector.

   Warning: Avoid routing near hot pipes, heat shields, or fuel tanks.

10. Reconnect the Battery:

    • Reconnect the vehicle’s negative (-) battery cable.
    • Install the 15-amp fuse into the fuse holder.

    Warning: All connections must be complete for the trailer tow harness to function properly. Test the installation using a test light or trailer.

11. Mount the T-One® Black Box:

    • Mount the black box on the driver’s side using the provided double-sided tape.
    • Secure the remainder of the T-One® harness using the provided cable ties.

    Warning: Ensure the epoxy side of the black box is facing downward to prevent water buildup.

12. Reinstall the Taillights:

    • Reinstall the taillight assemblies, ensuring the wiring is positioned properly.

13. Mount the 4-Flat Connector:

    • Secure the 4-flat connector in an accessible location using a bracket or electrical box (not included).

Specifications:

• Max. stop/turn light: 4.2 amps per side
• Max. tail lights: 7.5 amps

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.

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.

Manufacturer Notes:

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

Warranty Information:

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