

Trailer Wiring Harness Kit For 17‑23 GMC Acadia 17‑24 Cadillac XT5 20‑24 Cadillac XT6 19‑24 Chevy Blazer All Styles
Model: 1187202017 - 2024 Cadillac, XT5, All Styles
2017 - 2023 GMC, Acadia, All Styles
2019 - 2024 Chevrolet, Blazer, All Styles
Direct Plug & Play Wiring Kit
Part Number | 118720 |
Brand | Tekonsha |
Warranty | 1 Year |
Installation Instructions | ![]() |
Questions or Comments? Call 702-374-8999
Thank you for choosing Tekonsha, the most powerful name in trailer light wiring and brake control system. Our trailer wiring harness is vehicle specific, requires no splicing or cutting of the wires. Simply plug & play and your vehicle will be able to control trailers brake, turn and running lights. Trailer wiring kit comes with a 1 year warranty and everything necessary to install the trailer plug wiring. Tekonsha manufactures a wider range of different products for hooking up trailer lights to your Car Truck or SUV. T-One connectors work great with boat trailer wiring and utility trailer wiring. Typically those trailers will use the standard 4 flat plug which is what our T One connectors offer. If you have an RV Fifth Wheel or any other large type of trailer you will us a 7 pin trailer plug to control your electric trailer brakes. Tekonsha offers 7 pin trailer connector as well. Simply do a search above to see if there is a 7 wire trailer wiring available for hooking up your 7 way. If there is not you can use part number 85343 trailer wiring adapter to convert any 4-Flat into a 7-Way. In addition you will use part number 20506 which will include the rest of wiring needed for electric brake controls. You can also call us or email us any time and we will be able to provide information you need.
Partial list of fitment years:
17 18 19 20 21 22 23 24 2017 2018 2019 2020 2021 2022 2023 2024
$25 00 $31.00 19% OFF
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Fits 's with the following styles:
$31.00 $25 00
Questions? Call our Auto Experts at (877) 869-6690
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Product Details
- Brand: Tekonsha
- Model: 118720
- UPC: 016118145359
- Includes: T-One T-Connector Custom Harness
Compatibility Chart
Year Range | Make | Model | Style |
---|---|---|---|
Loading... |
Specification | |
Circuit Protected | No |
Hardware Included | Yes |
Harness Type | 4-Way Flat (Vehicle Side) |
Terminal Quantity | 4 |
Universal Or Specific Fit | Specific Fit |
Wire Colors | Brown, Green, Yellow, White |
Wire Quantity | 4 Wires |
Be the first to ask a question.
File | Size | |
---|---|---|
Trailer Hitch Wiring Instructions | 1.88MB | Download |
Description
2017 - 2024 Cadillac, XT5, All Styles
2017 - 2023 GMC, Acadia, All Styles
2019 - 2024 Chevrolet, Blazer, All Styles
Direct Plug & Play Wiring Kit
Part Number | 118720 |
Brand | Tekonsha |
Warranty | 1 Year |
Installation Instructions | ![]() |
Questions or Comments? Call 702-374-8999
Thank you for choosing Tekonsha, the most powerful name in trailer light wiring and brake control system. Our trailer wiring harness is vehicle specific, requires no splicing or cutting of the wires. Simply plug & play and your vehicle will be able to control trailers brake, turn and running lights. Trailer wiring kit comes with a 1 year warranty and everything necessary to install the trailer plug wiring. Tekonsha manufactures a wider range of different products for hooking up trailer lights to your Car Truck or SUV. T-One connectors work great with boat trailer wiring and utility trailer wiring. Typically those trailers will use the standard 4 flat plug which is what our T One connectors offer. If you have an RV Fifth Wheel or any other large type of trailer you will us a 7 pin trailer plug to control your electric trailer brakes. Tekonsha offers 7 pin trailer connector as well. Simply do a search above to see if there is a 7 wire trailer wiring available for hooking up your 7 way. If there is not you can use part number 85343 trailer wiring adapter to convert any 4-Flat into a 7-Way. In addition you will use part number 20506 which will include the rest of wiring needed for electric brake controls. You can also call us or email us any time and we will be able to provide information you need.
Partial list of fitment years:
17 18 19 20 21 22 23 24 2017 2018 2019 2020 2021 2022 2023 2024
Get Expert Help
Trailer Wiring Harness Kit For 17-23 GMC Acadia 17-24 Cadillac XT5 20-24 Cadillac XT6 19-24 Chevy Blazer All Styles Install Notes
Installation Instructions for T-One® T-Connector for Cadillac XT5
Part Numbers:
- 118720
Tools Required:
- Trim Panel Puller
- Test Probe
- 7mm Socket or Wrench
Step-by-Step Instructions:
-
Remove the Access Cover:
- Locate the access cover on the vehicle’s rear bumper area.
- Using a 7mm socket or wrench, remove the two bolts holding the cover in place.
- Carefully remove the cover and set it aside.
-
Locate the Tow Plug Connector:
- Behind the access cover area, locate the gray 4-pin connector.
- Remove the factory tow harness protective cap and clean the mating surface if dirty.
- Insert the 4-pin tow plug adapter into the connector and lock it into place.
- Ensure all connectors are fully inserted with locking tabs in place.
-
Secure the Wiring Harness:
- Use the provided cable ties to secure the remainder of the T-One® T-Connector harness.
- Avoid areas that may pinch, cut, or melt the wire.
-
Mount the 4-Flat Connector:
- Mount the 4-flat end in an accessible location using a bracket or electrical box (not included).
-
Replace the Access Cover:
- Reinstall the access cover removed during Step 1.
-
Test the Installation:
- Verify all connections are complete.
- Test the installation using a test light or trailer.
- Reset the vehicle’s electrical system by temporarily removing the key from the ignition.
Safety Notes:
- Overloading circuits can cause fires. Do not exceed stated product ratings or vehicle manufacturer specifications.
- Always wear safety glasses and follow all safety precautions during installation.
Manufacturer Notes:
- Refer to the vehicle owner’s manual and the instruction sheet for additional details.
- Store these instructions for future reference.
Installation Instructions for T-One® T-Connector for Cadillac XT5
Part Numbers:
- 118720
Tools Required:
- Trim Panel Puller
- Test Probe
- 7mm Socket or Wrench
Step-by-Step Instructions:
-
Remove the Access Cover:
- Locate the access cover on the vehicle’s rear bumper area.
- Using a 7mm socket or wrench, remove the two bolts holding the cover in place.
- Carefully remove the cover and set it aside.
-
Locate the Tow Plug Connector:
- Behind the access cover area, locate the gray 4-pin connector.
- Remove the factory tow harness protective cap and clean the mating surface if dirty.
- Insert the 4-pin tow plug adapter into the connector and lock it into place.
- Ensure all connectors are fully inserted with locking tabs in place.
-
Secure the Wiring Harness:
- Use the provided cable ties to secure the remainder of the T-One® T-Connector harness.
- Avoid areas that may pinch, cut, or melt the wire.
-
Mount the 4-Flat Connector:
- Mount the 4-flat end in an accessible location using a bracket or electrical box (not included).
-
Replace the Access Cover:
- Reinstall the access cover removed during Step 1.
-
Test the Installation:
- Verify all connections are complete.
- Test the installation using a test light or trailer.
- Reset the vehicle’s electrical system by temporarily removing the key from the ignition.
Safety Notes:
- Overloading circuits can cause fires. Do not exceed stated product ratings or vehicle manufacturer specifications.
- Always wear safety glasses and follow all safety precautions during installation.
Manufacturer Notes:
- Refer to the vehicle owner’s manual and the instruction sheet for additional details.
- Store these instructions for future reference.
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.
Warranty Information:
For complete warranty instructions, please download the full installation PDF.
Note: Store the 4-flat connector in the rear cargo area when not in use to prevent damage.