Trailer Wiring Harness Kit For 16-20 Buick Envision All Styles

Trailer Wiring Harness Kit For 16‑20 Buick Envision All Styles

Model: 118725

This Wiring Fits The Following Vehicles:

2016 - 2020 Buick, Envision, All Styles

Direct Plug & Play Wiring Kit

Part Number	118725
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:
16 17 18 19 20 2016 2017 2018 2019 2020

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$31 ⁸¹ $37.25 15% OFF

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Fits Vehicle Styles

Product Details

Brand: Tekonsha
Model: 118725
UPC: 016118146165
Includes: T-One T-Connector Custom Harness

Compatibility Chart

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

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Description

This Wiring Fits The Following Vehicles:

2016 - 2020 Buick, Envision, All Styles

Direct Plug & Play Wiring Kit

Part Number	118725
Brand	Tekonsha
Warranty	1 Year
Installation Instructions

Questions or Comments? Call 702-374-8999

Tags: 118725 , 2016 , 2017 , 2018 , 2019 , 2020 , 16 , 17 , 18 , 19 , 20 , Buick , Envision , Tekonsha , Trailer , Wiring , Harness

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Trailer Wiring Harness Kit For 16-20 Buick Envision All Styles Install Notes

Installation Instructions for T-One® T-Connector for Buick Envision

Part Numbers:

118725

Tools Required:

Trim Panel Puller
Test Probe

Step-by-Step Instructions:

Locate the Vehicle’s Trailer Harness Connector:
- The harness is located under the vehicle, behind the rear bumper, on the driver’s side.
Prepare the Connector:
- Remove the protective cap from the connector.
- Ensure the mating surfaces of the connectors are clean and free of dirt.
- Insert the 4-Pin Tow-Plug Adapter and lock it into place. Ensure 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 could pinch, cut, or melt the wire.
Mount the 4-Flat End:
- Mount the 4-flat connector in an accessible location using a bracket or electrical box (not included).
Install the Relays:
- Open the rear hatch and locate the storage compartment on the driver’s side of the cargo area.
- Insert the relays as shown.
Warning: Only replace relays with the same terminal layout as the relays included with the kit.
Test the Installation:
- Verify all connections are complete using a test light or trailer.
- Reset the vehicle electrical system by temporarily removing the key from the ignition.

Specifications:

Ensure not to exceed the stated product ratings or vehicle manufacturer specifications.

Safety Notes:

Overloading circuits can cause fires. Always adhere to the product’s stated amperage ratings and towing specifications.
Wear safety glasses and follow all safety precautions during installation.

Manufacturer Notes:

Store these instructions for future reference.
Refer to the vehicle owner’s manual for additional details.

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