Installation Instructions for Trailer Hitch #76226, #84226, and #CQT76226

Part Numbers:

• 76226
• 84226
• CQT76226

Applications:

• Years: 2011–Current
• Make and Models:
  • BMW X3
  • BMW X4

For accurate fitment and additional details, consult the manufacturer’s website.

Tools Required:

• Ratchet
• Torque Wrench
• Safety Glasses
• Sockets: 8 mm, 10 mm, 13 mm, 18 mm
• T20 Star Driver
• 6" Socket Extension
• Drill with 1/8" Drill Bit
• Plastic Rivet Gun
• Plastic Trim Tools
• Flat Head Screwdriver
• Utility Knife
• Marker
• Tape Measure
• Blue Thread Locker
• Silicone Sealant

Step-by-Step Instructions:

1. Remove Taillights:

• Open the tailgate and remove plastic covers near the taillights using a flat head screwdriver.
• X3 Models (2011-2017): Remove hex nuts securing the taillights.
• X3 Models (2018+): Remove bolts behind the interior cargo panel.
• X4 Models: Remove additional screws and grommets to disconnect the taillights.

2. Remove Underbody Panel:

• Use 8 mm and 10 mm sockets to remove screws and hex nuts from the underbody panel. Set the panel aside.

3. Remove Fascia:

• Remove screws beneath the taillights and along the bottom edge of the fascia.
• Drill out plastic rivets securing the wheel well trim and remove screws hidden behind it.
• Carefully remove the fascia using trim tools, and disconnect the wiring harness before setting it aside.

4. Remove Bumper Beam:

• Detach sensor wiring and exhaust hanger brackets using a 13 mm socket.
• Use an 18 mm socket with a 6" extension to remove hex flange nuts securing the bumper beam.

5. Install Hitch and Bumper Beam:

• Apply blue thread locker to all studs.
• Ensure foam gaskets are intact; apply silicone sealant if necessary.
• Align the hitch and bumper beam, securing them with existing M12 hex flange nuts.
• Torque all M12 fasteners to 68 lb-ft (92 N·m).
• Reattach exhaust hangers and torque hex nuts to 25 lb-ft (34 N·m).

6. Trim and Reinstall Fascia:

• Trim the fascia per the guidelines provided in the installation manual using a utility knife and marker.
• Reinstall the fascia, wheel well trim, and taillights.

Hardware List:

• 8 × Plastic Rivets
• Existing M12 Hex Flange Nuts

Safety Notes:

• Wear safety glasses during installation.
• Regularly check that all fasteners and the hitch ball are securely tightened.
• Plug any holes in the trunk pan or body panels if the hitch is removed to prevent water and exhaust fumes from entering the vehicle.
• Do not cut access or attachment holes with a torch.
• Replace any damaged hitch components or hitch ball before use.

Specifications:

• Max Gross Trailer Weight (Weight Carrying): 5,000 lbs (2,270 kg)
• Max Tongue Weight (Weight Carrying): 750 lbs (341 kg)
• Weight Distribution: Not applicable
• Installation Time: Approximately 90 minutes

This product complies with V.E.S.C. Regulation V-5 and SAE J684 safety specifications for towing systems.

Technical Support:

For assistance, visit www.trailerjacks.com or call 877-869-6690.

Attention: This is a summary of the installation procedure. For complete installation instructions, including diagrams, please download the full installation PDF.

Installation Instructions for T-One® T-Connector for BMW X4

Part Numbers:

• 118887

Tools Required:

• Trim Panel Remover
• Flat Blade Screwdriver
• Wire Crimpers
• Wire Cutters
• 10mm Socket & Ratchet
• Drill (3/32” Drill Bit)
• Heat Gun
• Test Light
• Perma Seal Butt Connector
• Ring Terminal
• Fuse Holder
• Fuse (15 Amp)
• Double-Sided Tape

Step-by-Step Instructions:

1. Prepare the Vehicle:

   • Open the rear hatch. Remove the cargo floor covering, side cargo panels, and any felt liners to expose the vehicle’s taillight wiring harness.
   • Temporarily remove the plastic threshold cover and cargo trays using a trim panel remover or Phillips screwdriver.

2. Locate the Vehicle’s Taillight Wiring Harness:

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

3. Connect the Driver-Side T-Connector:

   • Insert the T-One® Connector end containing the yellow wire between the vehicle wiring connectors and the taillight socket on the driver’s side.

4. Mount the Black Box:

   • On the driver’s side, determine a suitable mounting point for the black box.
   • Clean the mounting surface with a 50-50 mixture of rubbing alcohol and water, then secure the black box using the provided double-sided tape. Ensure the epoxy side faces downward to prevent water accumulation.

5. Ground the White Wire:

   • Locate a suitable grounding point near the black box, such as an existing ground stud.
   • Clean the area of dirt and rustproofing. Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.

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

6. Route the Passenger-Side T-Connector:

   • Route the green wire connector across the threshold to the passenger side.
   • Insert the green wire connector between the passenger-side taillight socket and the vehicle wiring harness.

7. Connect the Power Wire:

   • Disconnect the vehicle’s Negative (-) battery cable.
   • Cut the fuse holder wire and attach the provided 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 from the T-One® Connector black box using the provided yellow heat-shrink butt connector.

8. Route the Power Wire:

   • Starting from the engine compartment, route the black power wire along the vehicle’s frame to the rear, avoiding hot pipes, heat shields, and other hazards.

9. Reconnect the Battery and Test:

   • Reconnect the Negative (-) battery cable and install 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.

10. Reassemble the Vehicle:

    • Reinstall the cargo panels, threshold cover, and other components removed during installation.
    • Ensure no wires are pinched or damaged.

11. Store the 4-Flat Connector:

    • Route the 4-flat connector through the side panel and threshold into the storage compartment.
    • Store the 4-flat connector in the cargo area 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.

Troubleshooting:

• If the 4-flat connector does not function, ensure all connections are fully inserted and locked in place.
• Verify the ground connection is clean and tight.
• Check the fuse for any breaks and replace if necessary.

Installation Instructions for T-One® T-Connector for BMW X4

Part Numbers:

• 118887

Tools Required:

• Trim Panel Remover
• Flat Blade Screwdriver
• Wire Crimpers
• Wire Cutters
• 10mm Socket & Ratchet
• Drill (3/32” Drill Bit)
• Heat Gun
• Test Light
• Perma Seal Butt Connector
• Ring Terminal
• Fuse Holder
• Fuse (15 Amp)
• Double-Sided Tape

Step-by-Step Instructions:

1. Prepare the Vehicle:

   • Open the rear hatch. Remove the cargo floor covering, side cargo panels, and any felt liners to expose the vehicle’s taillight wiring harness.
   • Temporarily remove the plastic threshold cover and cargo trays using a trim panel remover or Phillips screwdriver.

2. Locate the Vehicle’s Taillight Wiring Harness:

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

3. Connect the Driver-Side T-Connector:

   • Insert the T-One® Connector end containing the yellow wire between the vehicle wiring connectors and the taillight socket on the driver’s side.

4. Mount the Black Box:

   • On the driver’s side, determine a suitable mounting point for the black box.
   • Clean the mounting surface with a 50-50 mixture of rubbing alcohol and water, then secure the black box using the provided double-sided tape. Ensure the epoxy side faces downward to prevent water accumulation.

5. Ground the White Wire:

   • Locate a suitable grounding point near the black box, such as an existing ground stud.
   • Clean the area of dirt and rustproofing. Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.

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

6. Route the Passenger-Side T-Connector:

   • Route the green wire connector across the threshold to the passenger side.
   • Insert the green wire connector between the passenger-side taillight socket and the vehicle wiring harness.

7. Connect the Power Wire:

   • Disconnect the vehicle’s Negative (-) battery cable.
   • Cut the fuse holder wire and attach the provided 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 from the T-One® Connector black box using the provided yellow heat-shrink butt connector.

8. Route the Power Wire:

   • Starting from the engine compartment, route the black power wire along the vehicle’s frame to the rear, avoiding hot pipes, heat shields, and other hazards.

9. Reconnect the Battery and Test:

   • Reconnect the Negative (-) battery cable and install 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.

10. Reassemble the Vehicle:

    • Reinstall the cargo panels, threshold cover, and other components removed during installation.
    • Ensure no wires are pinched or damaged.

11. Store the 4-Flat Connector:

    • Route the 4-flat connector through the side panel and threshold into the storage compartment.
    • Store the 4-flat connector in the cargo area 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.

For 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 Information:

For complete warranty instructions, 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.

Troubleshooting:

• If the 4-flat connector does not function, ensure all connections are fully inserted and locked in place.
• Verify the ground connection is clean and tight.
• Check the fuse for any breaks and replace if necessary.