Installation Instructions for Volvo V70, XC70, S60, and V60

Part Numbers:

• 75916
• 87674
• 44999
• 75178 (U-Haul)

Wiring Access Location:

• SUV3, SUV4

Tools Required:

• Utility Knife
• Wrenches: 8mm, 10mm, 13mm, 17mm
• Torx Driver: T-25

Step-by-Step Instructions:

1. Remove Rear Bumper Fascia:

   • Notify the vehicle owner that the fascia requires trimming for hitch installation.
   • Remove the plastic fastener at the rear of the vehicle between the bottom of the fascia and the end panel.
   • Open the tailgate and remove the two rubber tailgate stops.
   • Remove screws (each side) from the plastic wheel well molding and gently pull the fascia away from the molding.
   • At the tail light, pull gently rearward and continue until the fascia is completely removed.

2. Loosen Towing Eye:

   • Remove the inside appearance panel at the rear of the tailgate and loosen the towing eye under the panel on the passenger side.

3. Remove Impact Bar:

   • Continue loosening the towing eye as needed to remove the impact bar.

4. Install Hitch:

   • Place the hitch into the impact bar and align the bolt holes.
   • Attach conical washers to the hex bolts and insert them into the bolt holes.
   • Slide 3/8” blocks onto the backside of the bolts on the hitch (only for models with raised end panels).

5. Secure Hitch and Reinstall Components:

   • Raise the hitch and impact bar into position. Hand-tighten all bolts, including those for the towing eye.
   • Reinstall the towing eye by sandwiching the hitch, impact bar, and towing eye. Tighten all bolts to the specified torque:
     • M10 CL8.8 fasteners: 38 lb-ft (52 N*m).
   • Retighten the towing eye from inside the vehicle trunk.

6. Trim Fascia:

   • Use a utility knife to trim the fascia at the bottom center. The cut should be 2 1/2” wide and 2” long.
   • Obtain the vehicle owner’s approval before cutting.

7. Reinstall Fascia:

   • Carefully reinstall the fascia, ensuring it sits flat along the rear shelf of the trunk.

Hardware List:

• Qty (6): Hex Bolt – M10 x 1.5 x 45mm CL10.9
• Qty (6): Conical Washer – 7/16”
• Qty (6): Block – 3/8” (only for models with raised end panels)

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

Specifications:

• Hitch Type: Weight Carrying (Ball Mount)
  • Max Gross Trailer Weight: 4,000 lbs (1,814 kg)
  • Max Tongue Weight: 400 lbs (181 kg)
• Weight Distributing: Not compatible with spring bars.

Manufacturer Notes:

• 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 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.