Installation Instructions for Lexus RX350 and RX450h

Part Numbers:

• 75540
• 84540
• CQT75540

Tools Required:

• Wrenches: 10mm, 12mm, 17mm, 19mm
• Ratchet
• Torque Wrench
• Flat Head Screwdriver
• Hacksaw
• Tape
• Marker
• Socket Extension

Wiring Access Location:

• Not specified in this document.

Step-by-Step Instructions:

For RX350 Models:

1. Remove Tie-Down Bracket:

   • Use a 17mm socket to remove the two bolts securing the tie-down bracket on the passenger side.
   • Return the tie-down bracket to the vehicle owner.

2. Remove Weldnut Covers:

   • Using a flat head screwdriver, remove the two plastic caps from the rearmost existing weldnuts on the driver side.
   • Remove the rearmost rubber plug from the hole between the two weldnuts.

3. Trim Lower Fascia (for models after 2021):

   • Remove two tabs from the sensor bracket behind the lower fascia, if present.
   • Mark a 3"x3" trimming area using tape and a marker, centered from the edge of the bottom tab.
   • Use a hacksaw to trim the marked area.

4. Install Hitch:

   • Raise the hitch into position over the existing weldnuts.
   • Install two M12 bolts and conical washers on both sides.
   • Bend the exhaust heat shield if necessary to prevent it from touching the hitch.

5. Tighten Fasteners:

   • Use a torque wrench to tighten all M12 fasteners to 76 lb-ft (103 N·m).

For RX450h Models:

1. Remove Underbody Panel:

   • Use a 10mm socket to remove 13 fasteners securing the underbody panel. One plunger-style fastener is located behind the wheel well trim on the driver side.
   • Retain the underbody panel for reinstallation after trimming.

2. Remove Hole Plugs:

   • Remove three rearmost hole plugs from the driver side frame rail using a flat head screwdriver.

3. Remove Tow Loop:

   • Use a 17mm socket to remove the two M12 bolts securing the tow loop on the passenger side. Return the tow loop and fasteners to the vehicle owner.

4. Lower Exhaust:

   • Use a 12mm socket to remove two M8 bolts holding the exhaust hanger on the passenger side. Retain the bolts for reinstallation.

5. Install Hitch:

   • Raise the hitch into position over the exhaust.
   • Install two M12 bolts and conical washers on both sides.

6. Tighten Fasteners:

   • Use a torque wrench to tighten all M12 fasteners to 76 lb-ft (103 N·m) and M8 fasteners to 27 lb-ft (37 N·m).

7. Reinstall Exhaust:

   • Use a 12mm socket to reinstall the M8 bolts, conical washers, and hex nuts.

8. Trim Underbody Panel:

   • Use a hacksaw to trim the appearance panel in two places. Obtain vehicle owner approval before trimming.

9. Reinstall Underbody Panel:

   • Use the 13 retained fasteners to reinstall the appearance panel.

Hardware List:

• RX350:
  • (4) M12 x 1.25 x 40mm CL10.9 Hex Bolts
  • (4) 1/2” Conical Washers
• RX450h:
  • (4) M12 x 1.25 x 40mm CL10.9 Hex Bolts
  • (4) 1/2” Conical Washers
  • (2) 3/8” Conical Washers
  • (2) M8 Hex Nuts

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 body panels to prevent water and exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• 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: Max Trailer Weight 4,500 lbs (2,043 kg), Max Tongue Weight 675 lbs (306 kg).
  • Weight Distributing: Max Trailer Weight 4,500 lbs (2,043 kg), Max Tongue Weight 675 lbs (306 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.

Installation Instructions for Vehicles (Generic)

Part Numbers:

• 75540
• 84540
• CQT75540

Tools Required:

• Wrenches: 10mm, 12mm, 17mm, 19mm
• Ratchet
• Torque Wrench
• Flat Head Screwdriver
• Hacksaw
• Tape
• Marker
• Socket Extension

Wiring Access Location:

• Not specified in this document.

Step-by-Step Instructions:

For RX350 Models:

1. Remove Tie-Down Bracket:

   • Use a 17mm socket to remove the two bolts securing the tie-down bracket on the passenger side.
   • Return the tie-down bracket to the vehicle owner.

2. Remove Weldnut Covers:

   • Using a flat head screwdriver, remove the two plastic caps from the rearmost existing weldnuts on the driver side.
   • Remove the rearmost rubber plug from the hole between the two weldnuts.

3. Trim Lower Fascia (for models after 2021):

   • Remove two tabs from the sensor bracket behind the lower fascia, if present.
   • Mark a 3"x3" trimming area using tape and a marker, centered from the edge of the bottom tab.
   • Use a hacksaw to trim the marked area.

4. Install Hitch:

   • Raise the hitch into position over the existing weldnuts.
   • Install two M12 bolts and conical washers on both sides.
   • Bend the exhaust heat shield if necessary to prevent it from touching the hitch.

5. Tighten Fasteners:

   • Use a torque wrench to tighten all M12 fasteners to 76 lb-ft (103 N·m).

For RX450h Models:

1. Remove Underbody Panel:

   • Use a 10mm socket to remove 13 fasteners securing the underbody panel. One plunger-style fastener is located behind the wheel well trim on the driver side.
   • Retain the underbody panel for reinstallation after trimming.

2. Remove Hole Plugs:

   • Remove three rearmost hole plugs from the driver side frame rail using a flat head screwdriver.

3. Remove Tow Loop:

   • Use a 17mm socket to remove the two M12 bolts securing the tow loop on the passenger side. Return the tow loop and fasteners to the vehicle owner.

4. Lower Exhaust:

   • Use a 12mm socket to remove two M8 bolts holding the exhaust hanger on the passenger side. Retain the bolts for reinstallation.

5. Install Hitch:

   • Raise the hitch into position over the exhaust.
   • Install two M12 bolts and conical washers on both sides.

6. Tighten Fasteners:

   • Use a torque wrench to tighten all M12 fasteners to 76 lb-ft (103 N·m) and M8 fasteners to 27 lb-ft (37 N·m).

7. Reinstall Exhaust:

   • Use a 12mm socket to reinstall the M8 bolts, conical washers, and hex nuts.

8. Trim Underbody Panel:

   • Use a hacksaw to trim the appearance panel in two places. Obtain vehicle owner approval before trimming.

9. Reinstall Underbody Panel:

   • Use the 13 retained fasteners to reinstall the appearance panel.

Hardware List:

• RX350:
  • (4) M12 x 1.25 x 40mm CL10.9 Hex Bolts
  • (4) 1/2” Conical Washers
• RX450h:
  • (4) M12 x 1.25 x 40mm CL10.9 Hex Bolts
  • (4) 1/2” Conical Washers
  • (2) 3/8” Conical Washers
  • (2) M8 Hex Nuts

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.
• Follow all safety precautions when working beneath the vehicle, and wear eye protection.
• Do not cut access or attachment holes with a torch.

Warranty Information:

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

Specifications:

• Hitch Type and Weight Ratings:
  • Weight Carrying (Ball Mount): Max Trailer Weight 4,500 lbs (2,270 kg), Max Tongue Weight 675 lbs (306 kg).
  • Weight Distributing: Max Trailer Weight 4,500 lbs (2,270 kg), Max Tongue Weight 675 lbs (306 kg).
• Complies with safety specifications and requirements for connecting devices and towing systems.

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.

Installation Instructions for T-Connector Adapter for Lexus RX 350 and Lexus RX 450h

Part Numbers:

• 118255

Tools Required:

• Test Probe

Step-by-Step Instructions:

1. Open the Rear Hatch:

   • Temporarily remove the rear threshold plate.
   • On the passenger side, remove the floor covers and storage tray.

2. Partially Remove Interior Trim Panels:

   • On the passenger side, partially remove the rear interior trim panel.
   • Remove the necessary trim panel fasteners and carefully set aside all removed items to avoid damage.

3. Locate the Vehicle’s 10-Pin Connector:

   • Behind the rear interior trim panel, locate the vehicle’s 10-pin connector.
   • Ensure the mating surfaces of the vehicle harness connectors match the 10-pin tow plug adapter ends.

4. Connect the 10-Pin Tow Plug Adapter:

   • Insert the 10-pin tow plug adapter into the mating connector and lock it into place.
   • Ensure the connectors are fully inserted with locking tabs secure.

5. Locate the Vehicle’s Factory Tow Harness Connector:

   • Behind the bumper, locate the factory tow harness connector.
   • This connector will mate with the tow plug.

6. Connect the Tow Plug:

   • Remove the protective cap from the factory tow harness connector.
   • Clean the mating surfaces if necessary.
   • Insert the tow plug into the connector and ensure it is fully inserted with locking tabs secure.

   Warning:

   • All connections must be complete for the T-Connector to function properly.
   • Test the installation with a test light or trailer to ensure functionality.
   • Reset the vehicle’s electrical system by temporarily removing the key from the ignition.

7. Secure Loose Wires:

   • Secure all loose wires and mount the Trailer Tow Harness in an accessible location using a bracket or electrical box (not included).
   • Reinstall the plastic trim panels, threshold, storage covers, and floor covering, ensuring no wires are pinched or cut during reassembly.

   Warning:

   • Overloading circuits can cause fires.
   • Do not exceed the towing manufacturer’s ratings or the following specifications:
     • Max. stop/turn light: 1 per side (2.1 amps)
     • Max. tail lights: (5.6 amps)

Safety Notes:

• Follow all warnings and instructions carefully.
• Wear safety glasses and use safety precautions during installation.

Additional Notes:

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

Warranty and Technical Support:

• For complete warranty instructions, please download the full installation PDF.
• For technical support, visit www.trailerjacks.com or call 877-869-6690.

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

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 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.

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.

Warranty Information:

For complete warranty instructions, 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.

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.