Installation Instructions for Toyota Sienna

Part Numbers:

• 75120
• 44713
• 87638

Wiring Access Location:

• SUV3, SUV4

Tools Required:

• Wrenches: 7/8", 14mm, 17mm
• Drill Bits: 1/2"

Step-by-Step Instructions:

1. Remove Tow Hooks and Bolts:

   • Remove tow hooks and bolts from frame rails and return them to the customer.

2. Raise Hitch into Position:

   • Install four (4) M10 fasteners into existing weldnuts as shown in the diagram.

3. Drill Forward Holes:

   • Using the hitch as a template, drill a 1/2" hole in each frame rail for the forward attachment.

4. Enlarge Access Holes:

   • Remove plastic plugs in frame rails and enlarge access holes for easier bolt placement.
   • Caution: Vehicles with optional rear heaters should take care to avoid damaging rear heater hoses when enlarging the passenger side access hole.

5. Fishwire Bolts:

   • Fishwire the block and carriage bolt through each enlarged hole and install the fasteners as shown in the diagram.

6. Tighten Fasteners:

   • Torque M10 fasteners to 53 lb-ft (72 N·m).
   • Torque 1/2"-13 GR5 fasteners to 75 lb-ft (102 N·m).

Torque Specifications:

• M10 Fasteners: 53 lb-ft (72 N·m)
• 1/2"-13 GR5 Fasteners: 75 lb-ft (102 N·m)

Hardware List:

• (2) 1/2"-13 x 1.75" GR5 Carriage Bolts
• (2) 1/4" x 1 x 3" Blocks (3022)
• (2) 3/16" x 1-1/2" x 2" Blocks (4833-001)
• (2) Lock Washers
• (2) Hex Nuts
• (4) M10 x 1.25 x 30mm CL10.9 Conical Toothed Washers

Safety Notes:

• Regularly inspect the hitch to ensure all fasteners and the ball are properly tightened.
• Replace any damaged hitch or ball immediately.
• If the hitch is removed, plug all holes in the vehicle’s frame or body panels to prevent water or exhaust fumes from entering.
• Always follow proper safety precautions when working beneath the vehicle, including wearing eye protection.
• Do not cut access or attachment holes with a torch.

Specifications:

• Weight Carrying (Ball Mount):
  • Max Gross Trailer Weight: 3,500 lb (1,588 kg)
  • Max Tongue Weight: 350 lb (159 kg)
• Weight Distributing:
  • Max Gross Trailer Weight: 5,000 lb (2,268 kg)
  • Max Tongue Weight: 500 lb (227 kg)

Compliance:

• This product complies with SAE J684 and V.E.S.C. Regulation V-5 standards.

Installation Instructions for Circuit Protected Converter

Part Numbers:

• 119178

Wiring Access Location:

• Not specified in the document.

Tools Required:

• Drill (3/32” Drill Bit)
• Wire Crimpers
• Philips Head Screwdriver
• Test Probe

Step-by-Step Instructions:

1. Using a circuit tester, carefully probe one wire at a time to determine vehicle functions.

   • Caution: Do not probe across two wires or across a wire and vehicle structure to avoid damaging electronic components.

2. Disconnect and isolate the vehicle's negative (-) battery terminal.

   • Warning: Follow all warnings and precautions printed on the tow vehicle’s battery.

3. Attach the trailer wiring to the vehicle as shown in the illustration using splices.

4. Locate a suitable grounding point.

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

5. Mount the circuit-protected converter near the left tail light in the trunk or on the frame rail under the vehicle.

   • Mount with the wiring directed downward or sideways if downward is not possible.

6. Reconnect the vehicle's negative (-) battery terminal.

7. Testing Procedure:

   • Attach the ground lead of a circuit tester to the exposed ground terminal of the 4-flat end.
   • Activate the tow vehicle’s left turn, right turn, tail, and stop lights one at a time. Test each to confirm proper functionality.
   • Warning: Ensure all connections are complete for proper function. Test installation with a trailer or test light.

8. Secure all loose wires with cable ties.

   • Warning: Do not overload circuits to prevent fires. Adhere to these limits:
     • Max stop/turn light: 1 per side (2.1 amps)
     • Max tail lights: (7.5 amps)

Hardware List:

• Not detailed in the document.

Safety Notes:

• Wear safety glasses and follow safety precautions.
• Disconnect the negative (-) cable before wiring.
• Securely ground to the vehicle chassis or an existing ground stud.
• Use on 12-volt negative ground systems only.

Specifications:

• Max stop/turn light: 1 per side (2.1 amps)
• Max tail lights: (7.5 amps)
• Secure wiring with cable ties after installation.

Manufacturer Notes:

• Read and follow all vehicle warnings and instructions.
• Refer to the vehicle's owner manual and manufacturer materials for additional guidance.