Installation Instructions for Toyota Sienna
(2011 and Newer Models)

Part Numbers:

• 75237
• 87698
• 44786
• 78270 (U-Haul)

Tools Required:

• Wrenches: 19mm
• Torque Wrench
• Drill Bits: None

Wiring Access Location:

• SUV1, SUV2

Step-by-Step Instructions:

1. Appearance Panel Removal:

   • If the vehicle is equipped with an appearance panel covering the trunk pan, remove it.
   • Decide with the vehicle owner whether the panel will be trimmed or left off entirely after installation. (Refer to Figure 2 for the area to be trimmed.)

2. Lower the Exhaust:

   • Detach the exhaust from the rubber isolator to lower it.

3. Raise Hitch Into Position:

   • Lift the hitch into place and install M12 hex bolts, lock washers, and flat washers into the existing weldnuts in the frame as shown in Figure 1.

4. Reinstall the Exhaust:

   • Raise the exhaust back into position and reattach it to the rubber isolator.

5. Reinstall or Return Appearance Panel:

   • If trimmed, reinstall the appearance panel. If untrimmed, return it to the vehicle owner.

Hardware List:

• (6) M12 x 1.25 x 40mm Hex Bolts
• (6) 1/2" Lock Washers
• (6) 1/2" Flat Washers

Torque Specifications:

• Tighten all M12 CL10.9 fasteners to 75 lb-ft (102 N·m) using a torque wrench.

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 all 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 4,500 lbs (2,043 kg), Max Tongue Weight 675 lbs (306 kg).
  • Weight Distributing: Max Trailer Weight 5,000 lbs (2,270 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 T-Connector Adapter for Toyota Sienna

Part Numbers:

• 118304

Vehicle Compatibility:

• Toyota Sienna

Tools Required:

• 10mm Socket & Ratchet or Wrench
• Drill with a 3/32” Drill Bit
• Test Probe

Step-by-Step Instructions:

1. Remove Rear Taillight Housings:

   • Remove both of the vehicle’s rear taillight housings by unscrewing the two bolts holding each taillight in place.

2. Remove Rear Threshold:

   • Unscrew the three cargo bolts and carefully pry the threshold away from the vehicle.

3. Access Driver’s Side Wiring:

   • Carefully pull back the driver’s side trim panel, ensuring not to break any clips or tabs. If equipped with a rear speaker cover, remove screws or clips that may come off during panel removal.

4. Access Passenger’s Side Wiring:

   • Open the vehicle’s jack storage compartment to expose the opening to the taillight assemblies.

5. Route Passenger Side Harness:

   • From the passenger’s side, route the T-Connector’s harness ends containing the green wire out through the taillight opening.

6. Connect T-Connector:

   • Disconnect the vehicle’s wiring harness connector from the taillight assembly. Carefully plug the T-Connector’s harness between the separated halves.

7. Route Driver Side Harness:

   • Route the T-Connector harness containing the yellow wire across the vehicle under the threshold cover and out through the driver’s side taillight opening.
   • Repeat step 6 using the harness containing the yellow wire.

8. Ground Connection:

   • Locate a suitable grounding point near the connector, such as the vehicle’s frame or cross member. Clean dirt and rustproofing from the area.
   • Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.

   Caution:

   • Verify what is behind any surface before drilling to avoid vehicle damage or personal injury. Do not drill into exposed surfaces.

9. Mount the Converter Box:

   • Mount the T-Connector black converter box in an out-of-the-way location on the passenger side using the provided screw or cable tie. Secure all loose wires with cable ties.

10. Reassembly:

    • Tuck the yellow wire under the threshold panel and secure it. Reinstall the plastic trim panels, jack storage panel, and taillights.

11. Test the Installation:

    • Test and verify the installation using a test light or trailer to ensure proper functionality.

    Specifications:

    • Max. stop/turn light: 1 per side (2.1 amps)
    • Max. tail lights: (4.2 amps)

Hardware List:

• T-Connector adapter
• Eyelet and screw
• Cable ties

Safety Notes:

• Do not exceed the towing manufacturer’s rating or the unit specifications.
• Test thoroughly after installation to ensure all connections are complete.

Manufacturer Notes:

• Follow all warnings and installation instructions provided.
• Store the 4-flat connector in the rear cargo area when not in use.
• 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.