Installation Instructions for T-Connector Adapter for GMC Acadia

Part Numbers:

• 118451

Tools Required:

• Drill (3/32” Drill Bit)
• Phillips Head Screwdriver
• 7mm Socket & Ratchet or Wrench

Step-by-Step Instructions:

1. Remove the Taillight Assemblies:

   • Open the rear door.
   • Remove both taillight housing assemblies by removing the two bolts for each light.
   • Carefully pry the taillight housing assemblies away from the vehicle, being cautious not to break the alignment tabs.

2. Install the Driver-Side T-Connector:

   • Disconnect the vehicle wiring harness from the driver’s side taillight socket.
   • Plug the T-Connector end with the yellow wire between the vehicle wiring harness and the driver’s side taillight socket.

3. Route the T-Connector Wiring:

   • On the driver’s side, route the T-Connector end with the green wire and the 4-flat connector down through the opening between the bumper and the vehicle body.

4. Install the Passenger-Side T-Connector:

   • Route the T-Connector end with the green wire to the passenger’s side and up through the opening.
   • Repeat step 2 on the passenger side using the T-Connector with the green wire.

   Warning:

   • Route the wiring carefully to avoid hot pipes, heat shields, the fuel tank, or any points that may pinch or damage the wiring.

5. Ground the White Wire:

   • Locate a suitable grounding point near the connector, such as the vehicle’s frame or cross member. Avoid drilling into the vehicle floor or bed.
   • Clean dirt and rustproofing from the area. Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.

   Caution:

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

6. Reinstall the Taillight Assemblies:

   • Reinstall the taillight housing assemblies, positioning the vehicle wiring harness between the housing and the vehicle body.
   • Secure the remaining T-Connector harness with the provided cable ties to prevent damage or rattling.

   Note:

   • Mount the 4-flat connector in a suitable location under the vehicle. A mounting bracket is not included.

7. Test the Installation:

   • Test and verify the T-Connector functionality using a test light or trailer.

   Specifications:

   • Max. stop/turn light: 7.5 amps
   • Max. tail lights: 7.5 amps

Safety Notes:

• Overloading circuits can cause fires. Do not exceed the towing manufacturer’s rating or the unit specifications.
• Follow all warnings and installation instructions provided.

Manufacturer Notes:

• Refer to the vehicle owner’s manual and the instruction sheet for additional guidance.

Installation Instructions for T-Connector Adapter for GMC Acadia

Part Numbers:

• 118451

Tools Required:

• Drill (3/32” Drill Bit)
• Phillips Head Screwdriver
• 7mm Socket & Ratchet or Wrench

Step-by-Step Instructions:

1. Remove the Taillight Assemblies:

   • Open the rear door.
   • Remove both taillight housing assemblies by removing the two bolts for each light.
   • Carefully pry the taillight housing assemblies away from the vehicle, being cautious not to break the alignment tabs.

2. Install the Driver-Side T-Connector:

   • Disconnect the vehicle wiring harness from the driver’s side taillight socket.
   • Plug the T-Connector end with the yellow wire between the vehicle wiring harness and the driver’s side taillight socket.

3. Route the T-Connector Wiring:

   • On the driver’s side, route the T-Connector end with the green wire and the 4-flat connector down through the opening between the bumper and the vehicle body.

4. Install the Passenger-Side T-Connector:

   • Route the T-Connector end with the green wire to the passenger’s side and up through the opening.
   • Repeat step 2 on the passenger side using the T-Connector with the green wire.

   Warning:

   • Route the wiring carefully to avoid hot pipes, heat shields, the fuel tank, or any points that may pinch or damage the wiring.

5. Ground the White Wire:

   • Locate a suitable grounding point near the connector, such as the vehicle’s frame or cross member. Avoid drilling into the vehicle floor or bed.
   • Clean dirt and rustproofing from the area. Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.

   Caution:

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

6. Reinstall the Taillight Assemblies:

   • Reinstall the taillight housing assemblies, positioning the vehicle wiring harness between the housing and the vehicle body.
   • Secure the remaining T-Connector harness with the provided cable ties to prevent damage or rattling.

   Note:

   • Mount the 4-flat connector in a suitable location under the vehicle. A mounting bracket is not included.

7. Test the Installation:

   • Test and verify the T-Connector functionality using a test light or trailer.

   Specifications:

   • Max. stop/turn light: 7.5 amps
   • Max. tail lights: 7.5 amps

Safety Notes:

• Overloading circuits can cause fires. Do not exceed the lower of the towing manufacturer’s rating or the unit specifications.
• Follow all warnings and installation instructions carefully.

Manufacturer Notes:

• 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.
• Refer to the vehicle owner’s manual and the instruction sheet for additional guidance.

Warranty Information:

• For complete warranty instructions, please download the full installation PDF.

Technical Support:

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.