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2018 - 2025 Volvo XC60
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Tekonsha T-One connector (also referred to as T-Connector) wiring harnesses are the fastest and easiest way to add an electrical connector to the back of your vehicle. These connectors are used to link the wiring from your vehicle to the trailer when towing. Tekonsha T-One connectors feature custom designs to fit each vehicle make and model based on manufacturer specifications. Plus, the Plug & Play connectors on the end of the wires make it easy to install. No cutting or splicing!
Tekonsha offers the largest, most complete line of T-One connectors. To install a Tekonsha T-One wiring harness, simply locate your vehicle's wiring harness connector typically behind the vehicle taillight - unplug the connection and insert the T-Connector into the vehicle's harness. It's that easy! So what are you waiting for? Hit the road with the peace of mind only Tekonsha can provide. Life's a Journey. Stop Often.
| BRAND: | TEKONSHA |
| PART NUMBER: | 118773 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1.6 LBS |
| UNIVERSAL OR SPECIFIC FIT: | SPECIFIC |
| CIRCUIT PROTECTED: | YES |
| HARNESS TYPE: | MALE FEMALE |
| TERMINAL QUANTITY: | 4 |
| WIRE COLORS: | BROWN, GREEN, YELLOW, WHITE |
| WIRE QUANTITY: | 4 |
| WIRE GAUGE: | 16 GA. |
| POWER LEAD REQUIRED: | YES |
| ELECTRICAL SYSTEM TYPE: | 3-WIRE SYSTEM |
| HARDWARE INCLUDED: | YES |

Tekonsha is a leading manufacturer of electronic trailer brake controllers, pioneering the category in the 1970s. The lineup spans proportional units such as the Prodigy P3 and Prodigy iD, time-delayed controllers, the wireless Prodigy RF, plus vehicle-specific wiring harnesses, adapters and trailer brake components engineered for smooth, predictable stopping at any speed.
Tekonsha Engineering Company began in 1964 building RV steps and mirrors. Within a few years it had found its real calling, and by the 1970s Tekonsha was pioneering the manufacture of electronic trailer brake controllers, the product category that still defines the brand. More than half a century later it remains the reference name in trailer braking and is part of the Horizon Global group alongside Reese, Draw-Tite, Fulton, Bulldog and Wesbar.
A brake controller is the component that tells a trailer's electric brakes how hard to work and when, and getting that right is the difference between a controlled stop and a shove from behind. Tekonsha builds both major types. Proportional controllers use an internal accelerometer to sense how quickly the tow vehicle is slowing and apply trailer braking to match, so light braking stays light and hard braking is immediate. Time-delayed controllers ramp to a preset output over a fixed interval, a simpler and more economical approach that suits occasional towing.
The current brake controller range covers most of that ground. The Prodigy iD pairs with a phone through Tekonsha's EDGE technology for setup and monitoring, the P3 offers storable settings for multiple trailers and a trilingual colour LED display, the Prodigy P2 adds a dimmable display and boost mode for heavier loads, and the Voyager keeps operation simple and dependable. The Prodigy RF mounts to the trailer itself and controls wirelessly, which suits rental fleets and drivers who swap tow vehicles.
Installation is supported by vehicle-specific brake control harnesses that plug into a factory connector rather than requiring cut-and-splice wiring, along with mounting brackets and adapters. Matched controller bundles pair a unit with the correct harness. Products are tested to meet and often exceed published industry standards.
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1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2018 - 2025 | Volvo XC60 | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |


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Yes, the 2018-2023 Volvo XC60 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118773 (Part #TK118773) is designed to fit the 2018-2025 Volvo XC60.
The 2018-2023 Volvo XC60 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118773 (Part #TK118773) fits 2018-2025 Volvo XC60 models. The 2025 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2018-2023 Volvo XC60 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118773 (Part #TK118773) fits the following vehicles: 2018-2025 Volvo XC60. Always verify your specific year, make, and model before ordering.
The 2018-2023 Volvo XC60 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118773 (Part #TK118773) Drilling is required for installation. Basic hand tools are typically all you need.
Yes, this T-One T-Connector is designed for the Volvo XC60. Installation involves accessing the taillight wiring harness inside the access panels on both sides of the vehicle.
Trim panel remover, 10mm socket and ratchet or 10mm wrench, drill with 3/32" bit, 1/4" socket, wire crimpers, wire cutters, Phillips head screwdriver, and test probe.
Yes. Disconnect the vehicle's negative (-) battery cable before connecting the power wire to the battery. Reconnect it after the fuse holder is installed and the 15 amp fuse is in place.
Yes. You must drill a 3/32" hole for the white ground wire eyelet. The hole should be drilled into a suitable grounding point such as the vehicle's frame or crossmember—never into the vehicle floor or bed. Verify what is behind the surface before drilling.
A 15 amp fuse is installed in the yellow fuse holder provided with the kit. This fuse protects the black 12 gauge power wire connected to the vehicle's positive battery terminal.
Test and verify the installation with a test light or trailer. For the initial test, reset the vehicle electrical system by temporarily removing the key from the ignition. Ensure all connections are complete before testing.
The T-One T-Connector is a trailer wiring interface that connects to your Volvo XC60's taillight wiring harness. It allows you to connect a trailer to your vehicle by tapping into the existing taillight circuits on both the driver and passenger sides. The connector includes a black module box that houses the electrical components and connects to your vehicle's battery via a 15 amp fused power wire.
This manual covers only the Volvo XC60. The T-One T-Connector is designed specifically for this model. Do not attempt to install it on other vehicles without confirming compatibility with the manufacturer or a fitment database, as the taillight harness location and connector type may differ.
Open the tailgate and remove the cargo door on the floor. Carefully remove the floor trim panels and access panels on each side of the vehicle. The taillight wiring harness is located inside these access panel areas. Set aside all removed items carefully to avoid damage, and replace them after installation.
Locate the vehicle's taillight wiring harness on both the driver and passenger sides inside the access panels. Separate the existing connector carefully without breaking the locking tabs. On the driver's side, insert the T-One connector end with the yellow wire between the vehicle connectors and lock into place. Route the green wire connector down the threshold to the passenger side and insert it the same way. Ensure all connectors are fully inserted with locking tabs secured.
On the driver's side, locate the black 12 gauge power wire from the T-One connector box. Route the black wire along the exterior frame or follow the existing wiring along the thresholds into the engine compartment up to the battery. Avoid areas that may pinch or break the wire. If routing through a grommet and along the exterior, carefully avoid hot pipes, heat shields, the fuel tank, or any other points that may pinch or break the wire.
First, disconnect the vehicle's negative (-) battery cable. Remove the fuse from the yellow fuse holder if not already removed. Cut the fuse holder wire and attach the ring terminal to the vehicle's positive (+) battery cable. Connect the other end of the fuse holder to the black 12 gauge wire using the yellow butt connector provided. Reconnect the negative battery cable and install the 15 amp fuse into the fuse holder.
Mount the black box module on a flat surface in an out-of-the-way location to prevent damage or rattling. The exact location is not specified in the manual, but it should be secure and protected from impact.
Secure the remainder of the T-One T-Connector harness with the cable ties provided to prevent damage or rattling. Be careful to avoid any areas that would pinch, cut, or melt the wire. Store the 4-flat connector in the rear cargo area when not in use.
Locate a suitable grounding point near the connector, such as the vehicle's frame or crossmember. Do not drill into the vehicle floor or bed. Clean dirt and rustproofing from the area, then drill a 3/32" hole. Secure the white wire using the eyelet and screw provided. Always verify what is behind the surface before drilling to avoid damage to the vehicle or personal injury.
Always wear safety glasses during installation. Verify what is behind any surface before drilling to avoid damage and personal injury. Do not drill into exposed surfaces. When routing the power wire, avoid hot pipes, heat shields, the fuel tank, and any points that may pinch or break the wire. Do not exceed the product's amperage ratings or the towing manufacturer's rating stated in your vehicle owner's manual, as overloading circuits can cause fires.
Do not exceed the lower of the towing manufacturer's rating (including in your vehicle owner's manual) or the specific amperage ratings stated on the product. The manual does not specify the T-One connector's amperage rating; check the product label or your vehicle's owner's manual for this information.
Yes. When you separate the vehicle's taillight wiring connectors, ensure all connector surfaces are clean and free of dirt before inserting the T-One connector ends.
The T-One T-Connector uses three main wires: yellow (driver-side taillight connection), green (passenger-side taillight connection), and white (ground connection to vehicle frame or crossmember). The black 12 gauge power wire connects to the vehicle's positive battery terminal through a 15 amp fuse.
The kit includes the T-One T-Connector with yellow and green wire ends, a black 12 gauge power wire, a white ground wire with eyelet and screw, a yellow fuse holder with 15 amp fuse, a yellow butt connector, cable ties, and a 4-flat connector for storage in the rear cargo area when not in use.
Test and verify the installation with a test light or trailer once installed. For the initial test, reset the vehicle electrical system by temporarily removing the key from the ignition. Ensure all connections are complete before testing, as the T-One T-Connector will not function properly if any connections are incomplete.
The manual warns to be careful not to damage the locking tabs when separating and inserting the T-One connectors. If the locking tabs are damaged, the connectors may not stay securely in place. The manual does not provide repair instructions; contact the manufacturer or a professional installer if the locking tabs are broken.
Verify that all connections are complete. The T-One T-Connector will not function properly if any connections are incomplete. Check that: 1) both taillight connectors are fully inserted with locking tabs secured, 2) the white ground wire is securely fastened to the frame or crossmember, 3) the black power wire is properly connected to the battery positive terminal through the fuse holder, 4) the 15 amp fuse is installed in the fuse holder, and 5) the negative battery cable is reconnected. Reset the vehicle electrical system by temporarily removing the key from the ignition, then test with a test light or trailer.
Ensure that the connector surfaces are clean and free of dirt before insertion. The vehicle's taillight wiring connectors must be separated carefully without breaking the locking tabs. If the locking tabs are damaged, the connectors may not lock properly. Verify that you are inserting the connectors fully and in the correct orientation. If the connectors still will not lock, the locking tabs may be damaged and the connector may need to be replaced.
A repeatedly blown 15 amp fuse indicates an electrical overload or short circuit. Check that: 1) the black power wire is not damaged, pinched, or touching any hot surfaces, 2) the ring terminal is securely attached to the positive battery terminal with no exposed wire, 3) the yellow butt connector is fully seated on both the fuse holder wire and the black 12 gauge wire, and 4) you are not exceeding the product's amperage rating or the towing manufacturer's rating. If the fuse continues to blow, there may be a short circuit in the wiring or a problem with the trailer being towed. Do not bypass the fuse or use a higher amperage fuse.

George
Ordered online. Shipment arrived on time and with all the correct parts. Great customer service and friendly staff. Also, pricing was great!
May 22, 2023