Installation Instructions for Toyota Tundra

Part Numbers:

• 75105
• 44729
• 87588
• 78198UH

Tools Required:

• 3/4" Socket
• 18mm Socket
• Torque Wrench

Step-by-Step Instructions:

1. Position the Receiver:

   • Lift the receiver up to the frame of the vehicle.
   • Align the large holes in the receiver brackets over the rivet heads on the frame.

2. Install Bolts to Weld Nuts:

   • Install four (4) 1/2" serrated washers onto four (4) 12mm hex bolts.
   • Insert the bolts through the receiver brackets and into the weld nuts in the frame.

3. Install Carriage Bolts and Plates:

   • Place two (2) bolt plates over two (2) 1/2" carriage bolts.
   • Insert the bolts down through the frame and receiver brackets.
   • Secure with 1/2" serrated washers and 1/2" lock nuts.

4. Tighten Fasteners:

   • Torque the 12mm bolts to 75 lb-ft (102 N·m).
   • Torque the 1/2" nuts to 75 lb-ft (102 N·m).

Torque Specifications:

• 12mm Bolts: 75 lb-ft (102 N·m)
• 1/2" Nuts: 75 lb-ft (102 N·m)

Hardware List:

• (4) 12mm Hex Bolts
• (4) 1/2" Serrated Washers
• (2) Bolt Plates
• (2) 1/2" Carriage Bolts
• (2) 1/2" Lock Nuts

Safety Notes:

• Do not lubricate threads; bolt failure may occur due to over-tightening.
• Do not drill or weld to this hitch.
• Regularly inspect the hitch to ensure all fasteners are secure.
• Replace any damaged hitch or ball immediately.
• Always wear safety glasses and follow proper safety precautions when working beneath the vehicle.

Specifications:

• Weight Carrying (Ball Mount):
  • Max Gross Trailer Weight: 5,000 lb (2,270 kg)
  • Max Tongue Weight: 500 lb (227 kg)
• Weight Distributing:
  • Max Gross Trailer Weight: 7,500 lb (3,402 kg)
  • Max Tongue Weight: 750 lb (340 kg)

Additional Notes:

• This product complies with V.E.S.C. Regulation V-5 and SAE J684 safety standards.
• Consult the vehicle owner’s manual for towing recommendations and limitations.
• For installation assistance, contact Horizon Global at:
  • U.S.A.: 800-632-3290
  • Canada: 800-565-0351

Installation Instructions for Toyota Tundra

Part Numbers:

• 75105
• 44729
• 87588
• 78198UH

Tools Required:

• 3/4" Socket
• 18mm Socket
• Torque Wrench

Step-by-Step Instructions:

1. Position the Receiver

   • Lift the receiver into place against the vehicle frame.
   • Align the large holes in the receiver brackets with the rivet heads on the frame.

2. Install Bolts to Weld Nuts

   • Install four (4) 1/2" serrated washers onto four (4) 12mm hex bolts.
   • Insert the bolts through the receiver brackets into the weld nuts in the frame.

3. Install Carriage Bolts and Plates

   • Position two (2) bolt plates over two (2) 1/2" carriage bolts.
   • Insert the bolts down through the frame and receiver brackets.
   • Secure with 1/2" serrated washers and 1/2" lock nuts.

4. Tighten Fasteners

   • Torque the 12mm bolts to 75 lb-ft (102 N·m).
   • Torque the 1/2" nuts to 75 lb-ft (102 N·m).

Torque Specifications:

• 12mm Bolts: 75 lb-ft (102 N·m)
• 1/2" Nuts: 75 lb-ft (102 N·m)

Hardware List:

• (4) 12mm Hex Bolts
• (4) 1/2" Serrated Washers
• (2) Bolt Plates
• (2) 1/2" Carriage Bolts
• (2) 1/2" Lock Nuts

Safety Notes:

• Avoid lubricating threads; over-tightening may lead to bolt failure.
• Do not drill or weld on this hitch.
• Regularly inspect the hitch to ensure all fasteners remain secure.
• Replace any damaged hitch or ball immediately.
• Always wear safety glasses and follow proper safety precautions when working beneath the vehicle.

Specifications:

• Weight Carrying (Ball Mount):
  • Max Gross Trailer Weight: 5,000 lb (2,270 kg)
  • Max Tongue Weight: 500 lb (227 kg)
• Weight Distributing:
  • Max Gross Trailer Weight: 7,500 lb (3,402 kg)
  • Max Tongue Weight: 750 lb (340 kg)

General Notes:

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

Warranty Information:

For warranty coverage details, including duration and terms, 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.

End of Instructions

Installation Instructions for T-Connector Adapter

Part Numbers:

• 118378

Wiring Access Location:

• Underneath the vehicle, near the driver’s side frame rail.

Tools Required:

• Drill with a 3/32" drill bit.
• Tie wraps (provided).
• Double-sided tape (provided).

Step-by-Step Instructions:

1. Disconnect the vehicle’s negative battery cable.

2. Temporarily remove the battery hold-down bracket and slide the battery toward the motor (Fig. 2).

3. Locate the vehicle’s gray connector between the battery and the fender.

   • Remove the cap and install the trailer harness fuse holder connector.
   • Tie-wrap the gray connector and fuse harness to the vehicle’s wiring.
   • Return the battery to its original position (Fig. 1).
   • Note: If the vehicle has a pre-installed 30-amp trailer harness fuse holder, do not use it. Remove and replace it with the provided yellow fuse holder and 10-amp fuse (15-amp maximum allowed).

4. Route the trailer harness fuse holder wiring to the positive battery terminal, between the battery and the vehicle’s fuse box.

   • Attach the ring terminal of the trailer harness fuse holder to the positive battery post (Fig. 2).

5. Secure the trailer fuse holder wire with two tie wraps (Fig. 3).

6. Reinstall the battery hold-down bracket.

   • Insert the 10-amp fuse into the yellow fuse holder.
   • Reconnect the vehicle’s negative battery cable.

7. Locate the vehicle’s eleven-pin trailer tow plug underneath the vehicle, on the driver’s side near the frame rail (Fig. 4).

   • Remove the cap and plug the T-Connector harness into the vehicle’s connector.

8. Test the installation with a test light or trailer.

9. Use the double-sided tape to mount the T-Connector black converter box to the truck end sill.

   • Clean the mounting surface with a 50/50 water-alcohol solution before mounting (Fig. 6).

10. Secure the T-Connector wire harness to the vehicle’s harness using the provided cable ties.

    • Specifications:
      • This unit is rated for 7.5 amps per circuit.

Hardware List:

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

Safety Notes:

• Ensure all connections are clean and securely fastened.
• Do not exceed the specified amperage rating to prevent damage or fire.
• Test the installation after completing all steps to verify functionality.

Manufacturer Notes:

• Follow all warnings and instructions provided with the product.
• Use a test light or trailer to confirm proper installation.

Installation Instructions for T-Connector Adapter

Part Numbers:

• 118378

Wiring Access Location:

• Underneath the vehicle, near the driver’s side frame rail.

Tools Required:

• Drill with a 3/32" drill bit
• Tie wraps (provided)
• Double-sided tape (provided)

Step-by-Step Instructions:

1. Disconnect the Battery:

   • Disconnect the vehicle’s negative battery cable to prevent electrical issues during installation.

2. Reposition the Battery:

   • Temporarily remove the battery hold-down bracket and slide the battery toward the motor for access.

3. Connect the Fuse Holder:

   • Locate the gray connector between the battery and the fender.
   • Remove the cap and connect the trailer harness fuse holder to the gray connector.
   • Use tie wraps to secure the connector and fuse holder to the vehicle’s wiring.
   • Return the battery to its original position.
   • Note: If the vehicle has a pre-installed 30-amp fuse holder, replace it with the provided yellow fuse holder and 10-amp fuse (15-amp maximum allowed).

4. Route and Connect the Fuse Holder Wire:

   • Route the trailer harness fuse holder wire to the positive battery terminal, passing between the battery and the vehicle’s fuse box.
   • Attach the ring terminal to the positive battery post.

5. Secure Fuse Holder Wire:

   • Use the provided tie wraps to secure the fuse holder wire to prevent movement or damage.

6. Reinstall the Battery Bracket:

   • Reinstall the battery hold-down bracket, ensuring it is securely in place.
   • Insert the 10-amp fuse into the yellow fuse holder and reconnect the vehicle’s negative battery cable.

7. Locate the Trailer Tow Plug:

   • Locate the vehicle’s 11-pin trailer tow plug near the driver’s side frame rail.
   • Remove the protective cap and connect the T-Connector harness. Ensure the connection is secure.

8. Test the Installation:

   • Use a test light or connect a trailer to confirm proper operation of the following:
     • Left Turn Signal
     • Right Turn Signal
     • Brake Lights
     • Running Lights

9. Mount the Converter Box:

   • Clean the mounting surface on the truck end sill with a 50/50 water-alcohol solution.
   • Use the provided double-sided tape to mount the T-Connector black converter box.

10. Secure the Wiring:

    • Use the provided cable ties to secure the T-Connector wire harness to the vehicle’s wiring, avoiding hot or moving parts.

Specifications:

• Max Current: 7.5 amps per circuit

Hardware List:

• T-Connector adapter
• Yellow fuse holder
• 10-amp fuse
• Cable ties
• Double-sided tape

Safety Notes:

• Ensure all connections are clean, secure, and free from debris.
• Do not exceed the specified amperage rating to avoid potential fire or damage.
• Always test the installation to verify functionality before towing.

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.