Installation Instructions for Audi Q3 (2019-Current) and VW Tiguan (2019-Current)

Part Numbers:

• 76918

Tools Required:

• Safety Glasses
• Ratchet
• Torque Wrench
• 6” Socket Extension
• Painter’s Tape
• 11/16", 13mm, 18mm, and 19mm Sockets
• 10mm Deep Well Socket
• T25 Torx Bit Socket
• Plastic Trim Tools
• Utility Knife

Step-by-Step Instructions:

1. Remove Taillights:

   • Open the liftgate and remove the taillight cover trim.
   • Using a pry tool, carefully remove the cover.
   • Remove two screws securing the taillight with a T25 Torx bit.
   • Slide the taillight rearward to remove, disconnect the electrical connector, and set it aside. Repeat for the other side.

2. Remove Cargo Area Panels:

   • Lift and remove the cargo floor panel.
   • Remove the threshold panel by lifting it straight up and using a pry tool for assistance.

3. Remove Rear Fascia Fasteners:

   • Remove the rubber grommets in the cargo area to access hidden nuts. Use a 10mm deep well socket to remove the nuts.
   • In the rear wheel wells, locate and remove screws securing the bottom corner of the wheel well liner using a T25 Torx bit. Fold the liner back toward the tire and remove any additional screws. Repeat for the other side.
   • Remove fasteners behind the wheel well trim by pressing down on clips with a pry tool. Remove hidden screws with a T25 Torx bit. Protect trim with painter’s tape to prevent scratches during removal.

4. Remove Lower Fascia Screws:

   • Underneath the vehicle, remove six screws securing the bottom of the rear fascia.

5. Detach the Fascia:

   • Starting at the wheel well area, pull outward on the top front of the rear fascia to expose the clips.
   • Use a plastic pry tool to disconnect clips and continue pulling outward to remove the fascia.
   • Slide the fascia rearward, unplug electrical connectors, and set it aside.

6. Remove Impact Beam:

   • Using a 13mm socket, remove bolts securing the impact beam to the vehicle frame. Return the impact beam and bolts to the vehicle owner.

7. Install Hitch:

   • Insert the hitch side brackets into the frame rails and align the slots with the frame holes.
   • Use supplied pull wires to feed bolts and spacers through the hitch and vehicle frame.
   • Install conical washers (teeth side toward the vehicle frame) and secure with bolts.

8. Tighten Fasteners:

   • Tighten all hitch fasteners to 50 lb-ft (68 N·m) using a torque wrench.

9. Reinstall Components:

   • Reinstall the rear fascia, taillights, and any previously removed components in reverse order. Ensure all electrical connectors are reconnected.

Hardware List:

• (4) Carriage Bolts: 1/2"-13 x 1.75" GR8
• (4) Conical Washers: 1/2"
• (6) Hex Nuts: 7/16"-14
• (4) Spacer Blocks: 1/4" x 1" x 2"
• (6) Pull Wires: 7/16"
• (2) Bolts: M12 x 1.75 x 100mm CL10.9
• (2) Flat Washers: 7/16"
• (2) Prevailing Torque Nuts: M12 x 1.75 CL10

Safety Notes:

• Check the hitch periodically to ensure all fasteners and the ball are properly tightened.
• Replace any damaged hitch or ball immediately.
• Use eye protection when working beneath the vehicle.
• Do not cut access or attachment holes with a torch.

Specifications:

• Maximum Load Ratings:
  • Weight Carrying:
    • Gross Trailer Weight: 3,500 lbs (1,589 kg)
    • Tongue Weight: 350 lbs (159 kg)

Installation Instructions for Modulite® HD Protector Vehicle Wiring

Part Number:

• 119148

Tools Required:

• Phillips Head #2 Screwdriver
• Wire Cutters
• Wire Strippers/Wire Crimpers
• Tester or Volt Meter
• Socket & Ratchet Set
• Drill with 3/32” Drill Bit
• Double-Sided Tape

Step-by-Step Instructions:

Tow Vehicle Inputs - Determination:

1. Disconnect and isolate the vehicle's negative battery terminal.
   • Warning: Read and follow all warnings and instructions on the tow vehicle's battery.
2. Splice the tow harness input wires to the vehicle as determined.
   • Caution: Use appropriate gauge wire splices. Blue taps are for 16-18 gauge wires only.

Harness Installation:

1. Determine the mounting location of the module and secure it using the double-sided tape provided.
   • Warning: Mount the module with the epoxy side pointed towards the ground to prevent water buildup.
2. Locate a suitable grounding point near the module, such as an existing ground stud, or drill a 3/32” hole to secure the white wire using the provided eyelet and screw.
   • Caution: Verify what is behind any surface before drilling to avoid damage or personal injury.
3. Route the power wire to the vehicle’s positive battery terminal. Use the provided fuse holder, butt connector, and ring terminal to connect to the battery.
   • Do not insert the 15 amp fuse yet.
   • Caution: Ensure the module is connected to a constant power source and avoid routing the wire near hot pipes, heat shields, fuel tanks, or pinch points.

Completion:

1. Secure the harness with cable ties provided to prevent damage or rattling.
2. Reconnect the vehicle's negative battery cable.
3. Insert the 15 amp fuse into the fuse holder and close the cap.
4. Test the installation using a test light or trailer. Check each function independently and in combination.

Hardware List:

• 8 × Cable Ties, 8.5”
• 1 × 15 AMP Fuse
• 2 × Ring Terminals
• 1 × Fuse Holder
• 2 × Yellow Butt Connectors
• 1 × Self-Tapping Screw
• 4 × Blue Taps
• 1 × Spade Terminal

Wiring Outputs:

• White Wire: Ground
• Brown Wire: Tail
• Yellow Wire: Left Turn/Brake
• Green Wire: Right Turn/Brake
• Red Wire: Stop (for 3-wire systems only)

Safety Notes:

• Always read and follow all warnings and instructions included with the product and the vehicle's manual.
• Do not exceed the manufacturer’s towing capacity or the product’s amperage ratings.
• Wear safety glasses and use all necessary safety precautions during installation.

Troubleshooting Guide:

• 4-Flat Not Functioning: Ensure input wires are correctly installed and repeat testing after removing the 15 amp fuse for 10 seconds.
• No Power to 4-Flat: Check the chassis ground and ensure the module is properly connected to a constant power source.

Specifications:

• Installation Time: Approximately 45 minutes
• Compatibility: Does not work with multiplex vehicles (BM, BT, or BTT). Use part numbers 119190 or 119250 for these 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.

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.

For warranty information, please download the full installation PDF.