Installation Instructions for Toyota Highlander and Highlander Hybrid (2020-Present)

Part Numbers:

• 75992
• 44763
• CQT75992

Tools Required:

• Ratchet
• Torque Wrench
• Safety Glasses
• Sockets: 17mm, 19mm

Wiring Access Location:

• SUV3, SUV4

Step-by-Step Instructions:

1. Prepare Frame Rails:

   • Remove any rubber plugs from the bottom of the frame rails to expose the weldnuts.
   • Clean the threads of the weldnuts with a wire brush to remove any debris or corrosion.

2. Position the Hitch:

   • Raise the hitch into position under the vehicle, aligning the slots on the hitch with the weldnuts in the vehicle frame.

3. Install Fasteners:

   • Secure the hitch using six (6) M12 x 1.25 x 40mm CL10.9 hex bolts and six (6) 1/2" conical toothed washers.
   • Ensure the toothed side of the washers faces the hitch.

4. Tighten Fasteners:

   • Use a torque wrench to tighten all M12 fasteners to 79 lb-ft (107 Nm).

5. Verify Installation:

   • Double-check that all bolts are securely tightened, and the hitch is properly aligned.

Hardware List:

• (6) M12 x 1.25 x 40mm CL10.9 Bolts
• (6) 1/2" Conical Toothed Washers

Safety Notes:

• Check the hitch frequently to ensure all fasteners and the ball are properly tightened.
• If the hitch is removed, plug all holes in the trunk pan or other body panels to prevent water and exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• Always follow safety precautions when working beneath the vehicle, and wear eye protection.
• Do not cut access or attachment holes with a torch.

Specifications:

• Hitch Type and Weight Ratings:
  • Weight Carrying (Ball Mount): Max Trailer Weight 5,000 lbs (2,268 kg), Max Tongue Weight 500 lbs (227 kg).
  • Weight Distributing: Max Trailer Weight 6,000 lbs (2,721 kg), Max Tongue Weight 600 lbs (272 kg).
• Complies with safety specifications and requirements for connecting devices and towing systems of the State of New York, V.E.S.C. Regulation V-5, and SAE J684.

Additional Notes:

• Installation time is approximately 30 minutes for a professional installer.
• If you encounter difficulty installing, consult a professional or contact customer support.

Installation Instructions for T-Connector Adapter for Lincoln MKX

Part Numbers:

• 118519

Tools Required:

• Trim Panel Remover
• 10mm Socket & Ratchet or 10mm Wrench
• Drill (3/32” Drill Bit)
• Test Probe

Step-by-Step Instructions:

1. Open the Rear Tailgate and Remove Panels:

   • Remove cargo nets and the cargo floor hatch to access the spare tire area.
   • Remove both taillight housing assemblies by unscrewing two bolts per side and carefully prying the taillight housing away from the vehicle. Be cautious not to break the alignment tabs.

2. Disconnect the Wiring Harness:

   • Locate the taillight wiring harness in the taillight pocket on both sides.
   • Disconnect the harness connectors carefully, ensuring not to damage the locking tabs.

3. Route the T-Connector Wiring:

   • On both sides, slit the grommet to allow the T-Connector wiring to pass through.
   • Route the wiring through the interior trim panels and along the threshold plate to the passenger side.

4. Connect the T-Connector:

   • For the driver’s side, insert the T-Connector end with the yellow wire between the taillight socket and the vehicle wiring harness.
   • For the passenger side, repeat the process using the T-Connector end with the green wire.

5. 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.

   Caution:

   • Verify what is behind any surface before drilling to avoid damage or injury. Avoid drilling into the vehicle floor or exposed surfaces.

6. Connect the Grey 12-Pin Connector:

   • Insert the T-Connector’s grey 12-pin connector into the black box module.
   • Ensure all connectors are clean, properly aligned, and securely locked in place.

7. Mount the Black Box:

   • Locate a flat surface inside the vehicle to mount the black box using the provided double-sided tape.
   • Ensure the box is mounted in a dry location away from direct water or liquid exposure.

   Warning:

   • The black box module must only be mounted inside the vehicle to avoid damage.

8. Connect the Power Wire:

   • Route the black 12-gauge wire from the black box to the vehicle’s positive (+) battery cable.
   • Connect the black 12-gauge wire and the two black wires from the T-Connector’s grey connector using the provided yellow butt connector.

9. Reconnect the Battery:

   • Disconnect the vehicle’s negative (-) battery cable.
   • Attach the ring terminal to the positive (+) battery cable and secure it.
   • Insert the 10-amp fuse into the fuse holder and reconnect the negative (-) battery cable.

   Warning:

   • Ensure all connections are complete before testing.

10. Secure and Reassemble:

    • Use the provided cable ties to secure the wiring harness, avoiding areas that could pinch or cut the wiring.
    • Reinstall all removed panels and the taillight housing assemblies.

11. Test the Installation:

    • Test the T-Connector installation with a test light or trailer to ensure proper functionality.

    Specifications:

    • Max. stop/turn light: 2.1 amps
    • Max. tail lights: 5.6 amps

Safety Notes:

• Overloading circuits can cause fires. Do not exceed the towing manufacturer’s rating or the specified maximum ratings.
• Always wear safety glasses and follow all safety precautions.

Manufacturer Notes:

• Refer to the vehicle owner’s manual for additional guidance.

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 and Operation Instructions for the P3 Electronic Brake Control

Specifications:

• Supports 2, 4, 6, and 8 brake applications.
• Utilizes proportional braking with an inertial sensor.

Tools Required:

• Drill with a 1/8" bit.
• Screwdriver or nut driver.
• Wire crimp tool.
• Probe-type circuit tester.

Safety Notes:

1. Avoid mounting or activating RF-generating devices (e.g., cell phones) within 12 inches of the brake control.
2. Always adhere to the vehicle's Gross Combined Weight Rating (GCWR).
3. Do not use the Boost feature during icy or slippery road conditions.
4. Disconnect the trailer plug before testing a breakaway switch to prevent damage.

Hardware List:

• P3 Brake Control Unit.
• Mounting bracket.
• Wiring harness.
• #8 x 3/8" self-tapping screws.

Installation Instructions:

Mounting the Brake Control:

1. Traditional Bracket Mount:

   • Secure the bracket to a solid surface using the provided screws.
   • Attach the brake control unit and adjust to the desired angle.
   • Tighten screws securely.

2. Under Dash Pocket Mount:

   • Secure the small metal bracket with screws to a flat surface.
   • Attach the T-slot mount to the metal bracket and insert the brake control.

Wiring the Brake Control:

• Option 1: Use the included pigtail wiring harness for a generic installation.
• Option 2: Use an OEM-specific wiring harness compatible with the vehicle's tow package.
• Wire Functions:
  • Black: Positive power (+12V).
  • White: Vehicle ground.
  • Red: Cold side of brake pedal switch.
  • Blue: Trailer brakes output.

Setting Up the Control:

1. Connect the trailer to the vehicle.
2. Use the Menu/Options button to access the setup screen.
3. Select the brake type:
   • Electric: For electric brakes.
   • Hydraulic: For electric over hydraulic braking systems.
4. Adjust the power output to ensure effective braking without wheel lock-up.

Boost Feature:

• Provides enhanced braking sensitivity.
• Available in three levels:
  • B1: Light braking boost.
  • B2: Moderate braking boost.
  • B3: Aggressive braking boost.
• Recommended for heavier trailers or varying load conditions.

Reverse Mode:

• Cancel Boost and Hold features for 3 minutes by pressing and holding the Boost button for 5 seconds while holding the brake pedal.

Troubleshooting Guide:

Maintenance:

• Inspect connections and wiring regularly for damage or wear.
• Adjust trailer brakes after the first 200 miles of use and every 3,000 miles thereafter.
• Clean the brake control unit periodically to maintain optimal performance.

Warranty Information:

• Limited Lifetime Warranty:
  • Covers defects in materials and workmanship under normal use.
  • Excludes damage caused by misuse, improper installation, or external factors.
• Attention: For complete warranty instructions, 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.