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2022 - 2025 Jeep Grand Cherokee
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2021 - 2025 Jeep Grand Cherokee L
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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: | 118847 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1.75 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: | 2-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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2 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2022 - 2025 | Jeep Grand Cherokee | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
| 2021 - 2025 | Jeep Grand Cherokee L | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
The 2021-2024 Jeep Grand Cherokee L, 2022-2024 Jeep Grand Cherokee Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118847 (Part #TK118847) fits 2022-2025 Jeep Grand Cherokee models. The 2025 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the 2021-2024 Jeep Grand Cherokee L, 2022-2024 Jeep Grand Cherokee Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118847 (Part #TK118847) is designed to fit the 2022-2025 Jeep Grand Cherokee.
The 2021-2024 Jeep Grand Cherokee L, 2022-2024 Jeep Grand Cherokee Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118847 (Part #TK118847) fits the following vehicles: 2022-2025 Jeep Grand Cherokee; 2021-2025 Jeep Grand Cherokee L. Always verify your specific year, make, and model before ordering.
The 2021-2024 Jeep Grand Cherokee L, 2022-2024 Jeep Grand Cherokee Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118847 (Part #TK118847) Drilling is required for installation. Basic hand tools are typically all you need.
The manual shows installation on a Jeep Grand Cherokee L but does not provide a comprehensive list of compatible vehicles. Contact the manufacturer or check the product packaging for a complete vehicle compatibility list, as the manual alone does not specify all applications or exclusions.
The kit includes: a T-One® Connector black box with green and yellow wire harnesses, a white ground wire with eyelet and screw, a black 12 gauge power wire, a yellow fuse holder with 15 amp fuse, yellow butt connectors, and double-sided tape for mounting the black box. The manual does not list all individual components, so verify the contents against your packing slip.
Required tools are: trim panel remover, 10 mm socket and ratchet or 10 mm wrench, Torx-25 bit, drill with 3/32" bit, wire crimpers, wire cutters, Phillips head screwdriver, and test probe. You will also need safety glasses.
Yes. You must disconnect the vehicle's negative (−) battery cable before connecting the power wire to the positive (+) battery terminal in step 9. The battery remains disconnected until step 12, after the fuse holder and connections are complete.
Open the hatch and locate the trim panels covering the taillights. Using a Torx-25 bit, remove the mounting screws on both driver's and passenger's sides, being careful not to break the trim panel mounting tabs. Remove the taillight mounting screws and set the taillights aside. Disconnect the vehicle wiring harness from both taillight sockets, being careful not to break the locking tabs. All connector surfaces must be clean and free of dirt.
Begin with the passenger's side: route the harness with the green wire underneath the vehicle up through the opening between the bumper and body to the passenger's taillight pocket, then insert the T-One® Connector end with the green wire between the vehicle wiring connectors and lock into place. Next, route the harness with the yellow wire to the driver's side taillight pocket and plug it between the vehicle's mating connectors. Ensure all locking tabs are fully engaged.
Mount the black box underneath the vehicle behind the rear bumper fascia on the driver's side using the double-sided tape provided. The epoxy side of the module must point towards the ground to prevent water buildup. Before mounting, verify what is behind the surface to avoid damage to the vehicle.
Yes, drilling is required for the ground wire connection. You must drill a 3/32" hole to secure the white ground wire using the eyelet and screw provided. Do not drill into the vehicle floor or bed. Before drilling, verify what is behind the surface to avoid damage to the vehicle or personal injury. Do not drill into any exposed surfaces.
Locate a suitable grounding point near the connector, such as an existing ground stud. If no suitable stud exists, drill a 3/32" hole and secure the white wire using the eyelet and screw provided. Do not drill into the vehicle floor or bed. Clean dirt and rustproofing from the area before securing the wire.
After disconnecting the negative battery cable, remove the fuse from the yellow fuse holder provided. 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. Route the black wire from the front of the vehicle rearward along the frame rail, avoiding hot pipes, heat shields, fuel tank, and other points that may pinch or break the wire. Connect the other end to the black power wire on the T-Connector's black box using a yellow butt connector.
Install a 15 amp fuse into the yellow fuse holder. This fuse is provided with the kit and must be installed after all other connections are complete and the negative battery cable is reconnected.
The T-Connector uses three wire colours: green wire (passenger's side taillight connector), yellow wire (driver's side taillight connector), and black wire (12 gauge power wire that connects to the vehicle's positive battery terminal via the fuse holder). The white wire is the ground wire that connects to a ground stud or drilled hole.
Route the green wire harness underneath the vehicle up through the opening between the bumper and body to the passenger's side taillight pocket. Route the yellow wire harness underneath the vehicle up through the opening between the bumper and body to the driver's side taillight pocket. Route the black 12 gauge power wire from the front of the vehicle rearward along the frame rail. Avoid hot pipes, heat shields, fuel tank, and other points that may pinch or break the wire. If routing through a grommet and along the exterior, take extra care to avoid these hazards.
Always wear safety glasses during installation. Before drilling, verify what is behind any surface to avoid damage to the vehicle or personal injury. Do not drill into the vehicle floor, bed, or exposed surfaces. Avoid routing wires near hot pipes, heat shields, fuel tank, or other points that may pinch or break the wire. Do not exceed the product's stated amperage ratings or the towing manufacturer's rating, as overloading circuits can cause fires. Read and follow all warnings printed on the vehicle's battery.
After installation is complete, 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. All connections must be complete for the T-One® Connector to function properly.
After all wiring is complete, reconnect the vehicle's negative (−) battery cable and install the 15 amp fuse into the fuse holder. Reinstall all plastic trim panels, threshold, storage covers, floor covering, and other items removed during installation, being careful not to pinch or cut the wires. Secure all loose wires and mount the trailer tow harness in an accessible location with a bracket or electrical box.
Do not exceed the lower of two ratings: the towing manufacturer's rating (including the rating in your vehicle owner's manual) or the specific amperage ratings stated on the T-Connector product. Overloading circuits can cause fires. Consult your vehicle's owner's manual and the T-Connector instruction sheet for additional information.
Yes. After disconnecting the vehicle wiring harness from the taillight sockets, all connector surfaces must be clean and free of dirt before inserting the T-Connector harnesses.
When removing the trim panel screws with the Torx-25 bit, be careful not to break the trim panel mounting tabs. If tabs are damaged, the trim panel may not reinstall properly. Work slowly and ensure the bit is fully seated before turning.
The manual shows installation on a Jeep Grand Cherokee L. For other vehicles, contact the manufacturer or check the product packaging for a complete compatibility list.
You need: trim panel remover, 10 mm socket/ratchet or wrench, Torx-25 bit, 3/32" drill bit, wire crimpers, wire cutters, Phillips screwdriver, test probe, and safety glasses.
Yes, disconnect the negative battery cable before connecting the power wire in step 9. Keep it disconnected until step 12, after all connections are complete.
The T-Connector uses a 15 amp fuse in the yellow fuse holder provided. Install it after all connections are complete and the negative battery cable is reconnected.
Do not exceed the lower of: the towing manufacturer's rating (in your vehicle owner's manual) or the specific amperage rating on the T-Connector product. Overloading can cause fires.
Total for 3 items:
$75.95
Matt
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
