Installation Instructions for Volkswagen Golf GTI (2018-Current)

Part Numbers:

• 24979
• 77979
• CQT24979

Tools Required:

• Ratchet
• Torque Wrench
• Safety Glasses
• Sockets: 13mm
• T15 Torxbit Socket
• T25 Torxbit Socket
• 6" Socket Extension
• Panel Removal Tool
• Plastic Trim Tools
• Flat Head Screwdriver
• Utility Knife
• Marker
• Tape Measure

Step-by-Step Instructions:

1. Remove Taillights:

   • Open the tailgate and locate the opening behind the taillights.
   • Unscrew the wing-shaped handle using a flat head screwdriver and unclip the wiring harness.
   • Gently pull the taillights rearward to remove them.

2. Remove Bumper Fascia:

   • (a) Using a T15 Torxbit socket, remove 4 plastic screws and tabs from the bottom fascia.
   • (b) Using a T25 Torxbit socket, remove 1 vertical screw from the bottom of the wheel well liner, 3 horizontal screws from the side wheel well liner, and 1 vertical screw in the upper edge behind the wheel well liner, on both sides.
   • (c) Use plastic trim tools to remove the fascia starting at the outer edges near the wheel wells while gently pulling the fascia.
   • (d) Disconnect the wiring harness from the fascia, if present, and set it aside.

3. Remove Bumper Beam:

   • Using a 13mm socket with a 6" extension, remove 7 factory M8 bolts holding the bumper beam to the end panel.
   • Return the bolts to the vehicle owner.

4. Install Hitch:

   • Align the bumper beam with the hitch on the floor.
   • Raise the hitch and bumper beam into position, aligning holes on the end panel.
   • Loosely install the 7 M8 bolts to the bumper beam and hitch.

5. Torque Fasteners:

   • Tighten all M8 bolts to 25 ft-lb (34 N*m) using a torque wrench.

6. Trim Bumper Fascia:

   • Locate the opening on the bottom fascia and trim the area as shown in the instructions.

7. Reinstall Components:

   • Reinstall all fasteners, the wiring harness, the fascia, wheel well liners, and taillights.

Hardware List:

• (7) Bolt, M8 x 1.25 x 35mm, CL 9.8

Safety Notes:

• Always wear safety glasses during installation.
• Regularly check the hitch to ensure all fasteners and the ball are securely tightened.
• Plug any removed holes in the trunk pan or body panels to prevent water or exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• Do not cut access or attachment holes with a torch.

Specifications:

• Installation Time: 80 minutes
• Max Gross Trailer Weight: 2,000 lb (908 kg)
• Max Tongue Weight: 200 lb (90.8 kg)
• Complies with SAE J684 and VESC Regulation V-5 standards.

Installation Instructions for T-Connector Adapter

Part Numbers:

• 119191

Wiring Access Location:

• Near the rear of the vehicle, behind the bumper, or as indicated for vehicle-specific configurations.

Tools Required:

• Drill with a 3/32" drill bit.
• Phillips head #2 screwdriver.
• Wire cutters, wire strippers/crimpers.
• Tester or volt meter.
• Socket and ratchet set.
• Double-sided tape (provided).

Step-by-Step Instructions:

Installation of the Module:

1. Determine the mounting location for the module.

   • Use the provided double-sided tape to secure the module.
   • Ensure the epoxy side of the module faces downward to prevent water buildup.

2. Connect the module’s black wire to a 12-gauge (or larger) power wire using a yellow butt connector.

3. Locate a suitable grounding point near the module:

   • Drill a 3/32" hole if necessary and secure the white wire using the provided eyelet and self-tapping screw.
   • Clean the grounding area of dirt and rustproofing.

   Caution: Verify what is behind the surface before drilling to avoid damage or injury.

Routing Power to the Battery:

4. 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. Avoid using power sources that are interrupted when the vehicle is off.

Finalizing Installation:

5. Secure the wiring harness with the provided cable ties to prevent damage or rattling.

   • Avoid areas where wires may be pinched, cut, or melted.

6. Reconnect the vehicle’s negative (-) battery cable.

7. Insert the 15-amp fuse into the fuse holder and close the cap.

8. Test the installation with a test light or trailer to verify functionality.

   • Test each function independently and in combination.

   Specifications:

   • Max. stop/turn light: 2 per side (4.2 amps).
   • Max. tail lights: (7.5 amps).

Hardware List:

• T-Connector adapter.
• 15-amp fuse.
• Fuse holder.
• Eyelet and self-tapping screw.
• Double-sided tape.
• Cable ties.

Safety Notes:

• Handle all components with care to avoid damage.
• Ensure all connections are clean and securely fastened.
• Overloading circuits can cause fires. Do not exceed the towing manufacturer’s rating or the unit specifications.

Manufacturer Notes:

• Read and follow all vehicle warnings and installation instructions.
• Use a test light or trailer to confirm proper installation.
• Consult the vehicle owner’s manual for additional details.