Installation Instructions for Honda Civic (Including SI & Hybrid Models)

Part Numbers:

• 77139
• 24763
• 60822

Wiring Access Location:

• PC3, PC4

Tools Required:

• Wrenches: 3/4", 9/16", 10mm
• Drill Bits: 1/2” (Required for some models)

Specifications:

• Max Gross Trailer Weight: 2,000 lb. (908 kg)
• Max Tongue Weight: 200 lb. (91 kg)
• Note: Do not exceed towing vehicle manufacturer’s rating.

Step-by-Step Instructions:

1. Lower Exhaust:

   • Remove the tailpipe tangs from the rubber exhaust hanger at the rear of the vehicle.

2. Remove Heat Shield (Passenger Side):

   • Detach the four (4) bolts securing the exhaust heat shield to the vehicle. Retain the bolts for reinstallation.

3. Remove Plastic Shroud (Driver Side):

   • Remove the plastic rivet and nut holding the plastic shroud to the frame rail. Retain for reinstallation.

4. Position Hitch:

   • Raise the hitch into position with the frame bracket flanges positioned:
     • Between the frame rail and plastic shroud on the driver’s side.
     • Between the frame rail and exhaust heat shield on the passenger’s side.
   • Ensure tailpipe tangs are above the hitch bar. For some vehicles, remove the chrome decorative ring from the tailpipe to slide the muffler toward the vehicle center for better wrench access.

5. Install Handle Nuts and Fasteners:

   • Insert 1/2”-13 handle nuts through the large holes in the frame rails.
   • Install the provided fasteners as shown in the instructions.

6. Install U-Bolt:

   • Insert the 3/8”-16 U-bolt through the tow hook and mount it to the hitch using the provided fasteners.

7. Tighten Fasteners:

   • Torque all 1/2”-13 fasteners to 50 Lb.-Ft. (68 N*M).
   • Torque all 3/8”-16 fasteners to 20 Lb.-Ft. (27 N*M).

8. Reinstall Components:

   • Reinstall the exhaust heat shield over the hitch.
   • Reattach the exhaust to its hanger.
   • Replace the plastic rivet and nut securing the plastic shroud on the driver’s side.
   • Trim the heat shield if required to fit around the hitch.
   • Reinstall the chrome decorative ring to the tailpipe, if removed.

Hardware List:

• (2) 1/2”-13 GR5 Hex Bolts
• (1) 3/8”-16 GR2 U-Bolt
• (2) 1/2” Conical Toothed Washers
• (2) 3/8”-16 Flanged Lock Nuts
• (2) 1/2”-13 Handle Nuts

Safety Notes:

• Regularly inspect all fasteners and the hitch ball to ensure proper tightening.
• If the hitch is removed, plug any holes in the trunk pan or body panels to prevent water and exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• Always observe safety precautions and wear eye protection when working under the vehicle.
• Do not cut access or attachment holes with a torch.

Drawbar:

• Drawbar Kit: 3593

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.