




















Trailer Hitch w/ 7‑Way RV Wiring For 07‑12 GMC Acadia Class 3 2" Receiver All Models Reese
Model: 44569 85343 20506 7012a 118451Includes Everything Pictured:
Custom Fit Trailer Hitch
Wiring Harness (Plug & Play)
Trailer Connector Adapter
Brake Control Wiring Kit
Circuit Breaker
Installation Hardware
Installation Instructions
Fits The Following Vehicles
2007 – 2012 GMC, Acadia, All Styles
Each Wiring Kit includes:
- Plug and Play T-One Wiring Harness Connector
- 4-Way to 7-Way adapter w/ mounting bracket and screws
- Wiring Kit for 6 to 8 Brake Control Systems
- Includes 25 ft. 12-2 Duplex Wire
- (2) 30 Amp Circuit Breakers
- Attaching Terminals and Ring Connectors
Part Numbers | 118451 85343 20506 7012A |
Brand | Tekonsha |
Warranty | 1 Year |
T-One Wiring Installation |
![]() |
4-Way to 7-Way Adapter Installation |
![]() |
Brake Control Wiring Installation |
![]() |
Partial list of fitment years: 07 08 09 10 11 12 2007 2008 2009 2010 2011 2012
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Product Details
- Brand: Reese
- Model: 44569 85343 20506 7012a 118451
- Includes: Class 3 Trailer Tow Hitch, T-One T-Connector Custom Harness, Wiring Adapter, Trailer Brake Controller Installation Kit, Circuit Breaker
Compatibility Chart
Year Range | Make | Model | Style |
---|---|---|---|
Loading... |
Specification | |
Attachment Location | Rear |
Ball Mount Included | No |
Color | Black |
Drilling Required | No |
Gross Towing Weight | 5,000 lbs. |
Gross Towing Weight w/ Weight Distribution Kit | 7,500 lbs. |
Hitch Class | III |
Material | Steel |
Maximum Tongue Weight | 750 lbs. |
Maximum Tongue Weight w/ Weight Distribution Kit | 750 lbs. |
Mounting Hardware Included | Yes |
Mounting Type | Vehicle Frame |
Receiver Size | 2 in. |
Receiver Type | Round Tube |
Be the first to ask a question.
Description
Includes Everything Pictured:
Custom Fit Trailer Hitch
Wiring Harness (Plug & Play)
Trailer Connector Adapter
Brake Control Wiring Kit
Circuit Breaker
Installation Hardware
Installation Instructions
Fits The Following Vehicles
2007 – 2012 GMC, Acadia, All Styles
Each Wiring Kit includes:
- Plug and Play T-One Wiring Harness Connector
- 4-Way to 7-Way adapter w/ mounting bracket and screws
- Wiring Kit for 6 to 8 Brake Control Systems
- Includes 25 ft. 12-2 Duplex Wire
- (2) 30 Amp Circuit Breakers
- Attaching Terminals and Ring Connectors
Part Numbers | 118451 85343 20506 7012A |
Brand | Tekonsha |
Warranty | 1 Year |
T-One Wiring Installation |
![]() |
4-Way to 7-Way Adapter Installation |
![]() |
Brake Control Wiring Installation |
![]() |
Partial list of fitment years: 07 08 09 10 11 12 2007 2008 2009 2010 2011 2012
Get Expert Help
Trailer Hitch w/ 7-Way RV Wiring For 07-12 GMC Acadia Class 3 2" Receiver All Models Reese Install Notes
Installation Instructions for GMC Acadia, Saturn Outlook, Buick Enclave, and Chevrolet Traverse
Part Numbers:
- 75528
- 87435
- 44569
- 78218 (U-Haul)
Tools Required:
- Ratchet
- Torque Wrench
- Safety Glasses
- Plastic Trim Tools
- Sockets: 7mm, 18mm, 3/4”
- Star Drivers: T15
- Flat Head Screwdriver
Wiring Access Location:
- SUV1, SUV2
Step-by-Step Instructions:
-
Remove the Fascia Door:
- Remove and return the fascia door to the vehicle owner.
-
Remove Rear Fascia (if equipped with integrated exhaust outlets):
- Remove (5) screws inside each wheel well toward the rear.
- Remove (1) screw on the bottom of the fascia near the wheel well.
- Detach the rear side of the wheel well trim using fascia removal tools.
- Remove (1) bolt in the corner of the rear fascia above the wheel well.
- Underneath the vehicle, remove (1) plastic rivet from the fascia near the center.
- Open the tailgate, remove (2) bolts and (1) screw along the tailgate seal below the tail lights.
- Carefully remove the fascia, starting from one wheel well and working around.
-
Lower the Exhaust:
- Detach the rubber exhaust hangers to lower the rear portion of the exhaust:
- (2) hangers for single exhaust
- (4) hangers for dual exhaust.
- Support the exhaust to prevent damage.
- Detach the rubber exhaust hangers to lower the rear portion of the exhaust:
-
Raise the Hitch into Position:
- Raise the hitch over the exhaust pipes, aligning the slots in the hitch with the weldnuts in the frame rails.
-
Install Side Fasteners:
- Loosely install M12 bolts and 1/2” conical washers into the existing weldnuts on each side.
-
Install Central Fasteners:
- Install fasteners in the central receiver bracket with spacers sandwiched between the bracket and bumper:
- With Bumper Weldnuts: Use (2) M12 bolts and (2) 1/2” conical washers.
- Without Bumper Weldnuts: Use (2) 1/2” bolts, (2) 1/2” conical washers, and (2) handle nuts.
- Install fasteners in the central receiver bracket with spacers sandwiched between the bracket and bumper:
-
Tighten Fasteners:
- Tighten all M12 CL10.9 fasteners to 92 lb-ft (125 N·m).
- Tighten all 1/2"-13 GR5 fasteners to 50 lb-ft (68 N·m).
-
Reattach Exhaust:
- Raise the exhaust back into position and reattach the hangers:
- (2) hangers for single exhaust
- (4) hangers for dual exhaust.
- Raise the exhaust back into position and reattach the hangers:
-
Reinstall Rear Fascia (if removed):
- Reverse the steps from Step 2 to reinstall the rear fascia.
Hardware List:
- (6) M12 x 1.75 x 45mm CL10.9 Hex Bolts
- (2) 1/4” x 1” x 2” Spacers
- (6) 1/2” Conical Washers
- (2) 1/2” Handle Nuts
- (2) 1/2”-13 x 1-3/4” Hex Bolts
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 other body panels to prevent water and exhaust fumes from entering.
- Replace any damaged hitch or ball immediately.
- Follow all safety precautions when working beneath the vehicle, and wear eye protection.
- Do not cut access or attachment holes with a torch.
Specifications:
- Hitch Type and Weight Ratings:
- Weight Carrying (Ball Mount): Max Trailer Weight 5,000 lbs (2,270 kg), Max Tongue Weight 750 lbs (341 kg).
- Weight Distributing: Max Trailer Weight 7,500 lbs (3,405 kg), Max Tongue Weight 750 lbs (341 kg).
- 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 Vehicles (Generic)
Part Numbers:
- 75528
- 87435
- 44569
- 78218 (U-Haul)
Tools Required:
- Ratchet
- Torque Wrench
- Safety Glasses
- Plastic Trim Tools
- Sockets: 7mm, 18mm, 3/4”
- Star Drivers: T15
- Flat Head Screwdriver
Wiring Access Location:
- SUV1, SUV2
Step-by-Step Instructions:
-
Remove the Fascia Door:
- Remove and return the fascia door to the vehicle owner.
-
Remove Rear Fascia (if equipped with integrated exhaust outlets):
- Remove (5) screws inside each wheel well toward the rear.
- Remove (1) screw on the bottom of the fascia near the wheel well.
- Detach the rear side of the wheel well trim using fascia removal tools.
- Remove (1) bolt in the corner of the rear fascia above the wheel well.
- Underneath the vehicle, remove (1) plastic rivet from the fascia near the center.
- Open the tailgate, remove (2) bolts and (1) screw along the tailgate seal below the tail lights.
- Carefully remove the fascia, starting from one wheel well and working around.
-
Lower the Exhaust:
- Detach the rubber exhaust hangers to lower the rear portion of the exhaust:
- (2) hangers for single exhaust
- (4) hangers for dual exhaust.
- Support the exhaust to prevent damage.
- Detach the rubber exhaust hangers to lower the rear portion of the exhaust:
-
Raise the Hitch into Position:
- Raise the hitch over the exhaust pipes, aligning the slots in the hitch with the weldnuts in the frame rails.
-
Install Side Fasteners:
- Loosely install M12 bolts and 1/2” conical washers into the existing weldnuts on each side.
-
Install Central Fasteners:
- Install fasteners in the central receiver bracket with spacers sandwiched between the bracket and bumper:
- With Bumper Weldnuts: Use (2) M12 bolts and (2) 1/2” conical washers.
- Without Bumper Weldnuts: Use (2) 1/2” bolts, (2) 1/2” conical washers, and (2) handle nuts.
- Install fasteners in the central receiver bracket with spacers sandwiched between the bracket and bumper:
-
Tighten Fasteners:
- Tighten all M12 CL10.9 fasteners to 92 lb-ft (125 N·m).
- Tighten all 1/2"-13 GR5 fasteners to 50 lb-ft (68 N·m).
-
Reattach Exhaust:
- Raise the exhaust back into position and reattach the hangers:
- (2) hangers for single exhaust
- (4) hangers for dual exhaust.
- Raise the exhaust back into position and reattach the hangers:
-
Reinstall Rear Fascia (if removed):
- Reverse the steps from Step 2 to reinstall the rear fascia.
Hardware List:
- (6) M12 x 1.75 x 45mm CL10.9 Hex Bolts
- (2) 1/4” x 1” x 2” Spacers
- (6) 1/2” Conical Washers
- (2) 1/2” Handle Nuts
- (2) 1/2”-13 x 1-3/4” Hex Bolts
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 other body panels to prevent water and exhaust fumes from entering.
- Replace any damaged hitch or ball immediately.
- Follow all safety precautions when working beneath the vehicle, and wear eye protection.
- Do not cut access or attachment holes with a torch.
Warranty Information:
- For complete warranty instructions, please download the full installation PDF.
Specifications:
- Hitch Type and Weight Ratings:
- Weight Carrying (Ball Mount): Max Trailer Weight 5,000 lbs (2,270 kg), Max Tongue Weight 750 lbs (341 kg).
- Weight Distributing: Max Trailer Weight 7,500 lbs (3,405 kg), Max Tongue Weight 750 lbs (341 kg).
- Complies with safety specifications and requirements for connecting devices and towing 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.
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.
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:
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
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:
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
Installation Instructions for 4-Way to 7-Way Adapter and Brake Control Wiring
Tools Required:
- Phillips Head Screwdriver
- Drill with 3/32" Drill Bit
- 10mm Socket & Ratchet or Wrench
- Wire Crimpers
- Wire Cutters
- Test Light or Multimeter
- Cable Ties
Part 1: Install the 4-Way to 7-Way Adapter
Step-by-Step Instructions:
-
Mount the Adapter:
- Choose a suitable mounting point on the vehicle, typically near the hitch.
- Use the provided bracket and screws to secure the adapter.
-
Connect the 4-Flat Plug:
- Plug the 4-flat connector on the adapter into the existing 4-flat plug on the vehicle.
- This connection enables tail lights, left turn, and right turn signals.
-
Ground the Adapter:
- Locate a clean, solid grounding point near the adapter.
- Drill a 3/32" hole if necessary and secure the white ground wire from the adapter using the provided screw and eyelet.
-
Leave Additional Wires Disconnected:
- The following wires will remain disconnected until Part 2:
- Black Wire: Power from the battery.
- Blue Wire: Brake control output.
- Yellow Wire: Reverse light (optional; leave disconnected unless needed).
- The following wires will remain disconnected until Part 2:
-
Test Initial Connection:
- Use a test light or trailer to verify functionality of the 4-way connections (tail lights, turn signals).
Part 2: Install Brake Control Wiring
Step-by-Step Instructions:
-
Mount Circuit Breakers:
- Install two 30A circuit breakers on the firewall or another suitable location near the battery.
- Use self-tapping screws to mount them securely.
-
Route Power Wires:
- Connect the black 12-gauge wire from the 7-way adapter to the auxiliary side of one circuit breaker (this powers the 7-way socket).
- Run a heavy-gauge wire from the battery's positive terminal to the battery side of this circuit breaker, using a ring terminal.
- Run another heavy-gauge wire from the battery's positive terminal to the auxiliary side of the second circuit breaker (for the brake controller).
-
Install the Brake Controller:
- Mount the brake controller under the dash on a firm surface.
- Use the following connections:
- Red Wire: Connect to the cold side of the brake switch (active only when the brake pedal is pressed).
- Blue Wire: Connect to the blue wire on the 7-way adapter for trailer brakes.
- White Wire: Connect to a solid ground point on the vehicle body.
- Black Wire: Connect to the auxiliary side of the second 30A circuit breaker (provides power to the brake controller).
-
Optional: Connect Reverse Light Circuit:
- If the trailer has a reverse light circuit, connect the yellow wire from the 7-way adapter to the vehicle’s reverse light circuit.
-
Reconnect the Battery:
- Reattach the negative battery cable and ensure all connections are secure.
- Insert the fuses into both circuit breakers.
-
Secure All Wires:
- Use cable ties to secure all loose wires and prevent damage or rattling.
-
Test the System:
- Verify functionality of all circuits (running lights, turn signals, brake lights, and brake controller output).
- If applicable, test the reverse light circuit.
Notes:
- Most installations will only require connecting the black and blue wires from the 7-way adapter.
- Leave the yellow wire disconnected unless the trailer has a reverse light or surge brake lockout circuit.
- Always adhere to safety guidelines and verify all connections before use.
Warning: Incorrect wiring can cause damage to the vehicle or trailer. Test all connections carefully before use.
Installation Instructions for 4-Way to 7-Way Adapter and Brake Control Wiring
Tools Required:
- Phillips Head Screwdriver
- Drill with 3/32" Drill Bit
- 10mm Socket & Ratchet or Wrench
- Wire Crimpers
- Wire Cutters
- Test Light or Multimeter
- Cable Ties
Part 1: Install the 4-Way to 7-Way Adapter
Step-by-Step Instructions:
-
Mount the Adapter:
- Choose a suitable mounting point on the vehicle, typically near the hitch.
- Use the provided bracket and screws to secure the adapter.
-
Connect the 4-Flat Plug:
- Plug the 4-flat connector on the adapter into the existing 4-flat plug on the vehicle.
- This connection enables tail lights, left turn, and right turn signals.
-
Ground the Adapter:
- Locate a clean, solid grounding point near the adapter.
- Drill a 3/32" hole if necessary and secure the white ground wire from the adapter using the provided screw and eyelet.
-
Leave Additional Wires Disconnected:
- The following wires will remain disconnected until Part 2:
- Black Wire: Power from the battery.
- Blue Wire: Brake control output.
- Yellow Wire: Reverse light (optional; leave disconnected unless needed).
- The following wires will remain disconnected until Part 2:
-
Test Initial Connection:
- Use a test light or trailer to verify functionality of the 4-way connections (tail lights, turn signals).
Part 2: Install Brake Control Wiring
Step-by-Step Instructions:
-
Mount Circuit Breakers:
- Install two 30A circuit breakers on the firewall or another suitable location near the battery.
- Use self-tapping screws to mount them securely.
-
Route Power Wires:
- Connect the black 12-gauge wire from the 7-way adapter to the auxiliary side of one circuit breaker (this powers the 7-way socket).
- Run a heavy-gauge wire from the battery's positive terminal to the battery side of this circuit breaker, using a ring terminal.
- Run another heavy-gauge wire from the battery's positive terminal to the auxiliary side of the second circuit breaker (for the brake controller).
-
Install the Brake Controller:
- Mount the brake controller under the dash on a firm surface.
- Use the following connections:
- Red Wire: Connect to the cold side of the brake switch (active only when the brake pedal is pressed).
- Blue Wire: Connect to the blue wire on the 7-way adapter for trailer brakes.
- White Wire: Connect to a solid ground point on the vehicle body.
- Black Wire: Connect to the auxiliary side of the second 30A circuit breaker (provides power to the brake controller).
-
Optional: Connect Reverse Light Circuit:
- If the trailer has a reverse light circuit, connect the yellow wire from the 7-way adapter to the vehicle’s reverse light circuit.
-
Reconnect the Battery:
- Reattach the negative battery cable and ensure all connections are secure.
- Insert the fuses into both circuit breakers.
-
Secure All Wires:
- Use cable ties to secure all loose wires and prevent damage or rattling.
-
Test the System:
- Verify functionality of all circuits (running lights, turn signals, brake lights, and brake controller output).
- If applicable, test the reverse light circuit.
Notes:
- Most installations will only require connecting the black and blue wires from the 7-way adapter.
- Leave the yellow wire disconnected unless the trailer has a reverse light or surge brake lockout circuit.
- Always adhere to safety guidelines and verify all connections before use.
Warning: Incorrect wiring can cause damage to the vehicle or trailer. Test all connections carefully before use.
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.
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.