Trailer Wiring and Bracket and Light Tester For 20‑24 Jeep Gladiator 18‑24 Wrangler JL (New Body Style)
Model: 118786 118144 20114Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
This Hitch Fits The Following Vehicles:
2018 - 2024 Jeep, Wrangler, JL (New Body Style)
2020 - 2024 Jeep, Gladiator, All Styles
Direct Plug & Play Wiring Kit
Wiring Specs
| Part Number | 118786 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions |  |
| Part Number | 118144 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| Mounts electrical connector to attachment bracket Includes screws and nuts Attractive point-of-purchase packaging |
|
| Warranty | 1 Year |
| Part Number | 20114 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| 4-Flat Car End Tester w/LED Display Plug these testers into any car connector and you will have an instant test of running light circuits. |
|
| Warranty | 1 Year |
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:
18 19 20 21 22 23 24 2018 2019 2020 2021 2022 2023 2024
$107 41 $164.42 35% OFF
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$164.42 $107 41
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Product Details
- Brand: Tekonsha
- Model: 118786 118144 20114
- Includes: T-One T-Connector Custom Harness, Mounting Bracket, 4-Flat Car End Tester
Compatibility Chart
Description
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
This Hitch Fits The Following Vehicles:
2018 - 2024 Jeep, Wrangler, JL (New Body Style)
2020 - 2024 Jeep, Gladiator, All Styles
Direct Plug & Play Wiring Kit
Wiring Specs
| Part Number | 118786 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions | |
| Part Number | 118144 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| Mounts electrical connector to attachment bracket Includes screws and nuts Attractive point-of-purchase packaging |
|
| Warranty | 1 Year |
| Part Number | 20114 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| 4-Flat Car End Tester w/LED Display Plug these testers into any car connector and you will have an instant test of running light circuits. |
|
| Warranty | 1 Year |
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:
18 19 20 21 22 23 24 2018 2019 2020 2021 2022 2023 2024
Get Expert Help
Trailer Wiring and Bracket and Light Tester For 20-24 Jeep Gladiator 18-24 Wrangler JL (New Body Style) Install Notes
Installation Instructions for T-One® T-Connector for Jeep Wrangler and Jeep Gladiator
Part Numbers:
- 118786
Tools Required:
- Trim Panel Remover
- 10mm Socket & Ratchet or Wrench
- Drill (3/32” Drill Bit)
- 1/4” Socket
- Wire Crimpers
- Wire Cutters
- Phillips Head Screwdriver
- Test Probe
- 8mm Socket & Ratchet or Wrench
Step-by-Step Instructions:
For Jeep Wrangler:
-
Access Taillight Bolts:
- Open the rear door to access the rear bolt holding the taillight.
- Remove the small square access cover located on the trim panel below the side windows using a trim panel remover to expose the white bolt.
-
Remove Taillight Assemblies:
- Using a 10mm socket, remove the white bolt holding the taillight in place.
- Carefully pull the taillight away from the vehicle to expose the vehicle’s taillight wiring harness.
- Repeat the process for the passenger side.
For Jeep Gladiator:
- Access Taillight Bolts:
- Open the rear tailgate to access the bolts securing the taillights.
- Remove the two bolts and carefully pull the taillight housings rearward, being cautious not to break the alignment tabs.
For All Vehicles:
-
Locate the Taillight Wiring Harness:
- On both sides of the vehicle, locate the taillight wiring harness. The harness will have a connection point matching the ends of the T-One® Connector.
- Separate the connectors carefully, ensuring not to damage the locking tabs. Ensure all connectors are clean.
-
Connect Driver-Side T-Connector:
- Insert the T-One® Connector end with the yellow wire between the vehicle wiring connectors and lock into place. Ensure connectors are fully inserted.
-
Route the Harness:
- Route the harness containing the green wire and 4-flat connector down the opening behind the driver-side taillight.
- Route the green wire underneath the vehicle and up through the opening behind the passenger-side taillight.
Warning: Avoid routing the wire near hot pipes, heat shields, or the fuel tank.
-
Connect Passenger-Side T-Connector:
- Insert the T-One® Connector end with the green wire between the vehicle wiring connectors on the passenger side.
-
Ground the White Wire:
- Locate a suitable grounding point near the connector on the driver’s side.
- Clean the surface of dirt and rustproofing.
- Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.
Caution: Verify what is behind the surface before drilling.
-
Connect the Power Wire:
- On the driver’s side, locate the black 12-gauge power wire from the T-One® Connector box.
- Attach the provided black wire and route it along the exterior frame or existing wiring to the engine compartment, avoiding hot pipes and sharp edges.
-
Connect to the Battery:
- Disconnect the Negative (-) battery cable.
- Remove the fuse from the yellow fuse holder.
- Attach the ring terminal to the Positive (+) battery cable and secure it.
- Connect the other end of the fuse holder to the black 12-gauge wire using the yellow butt connector.
Warning: Follow all warnings on the tow vehicle’s battery.
-
Reconnect the Battery and Test:
- Reconnect the Negative (-) battery cable.
- Insert the 15-amp fuse into the fuse holder.
- Test the installation with a test light or trailer. Reset the vehicle’s electrical system by temporarily removing the key from the ignition.
-
Mount the Black Box Module:
- Locate a flat surface and mount the black box module to prevent damage or rattling.
-
Secure the Wiring Harness:
- Use the provided cable ties to secure the T-One® Connector harness, avoiding areas that may pinch, cut, or melt the wire.
-
Reinstall Taillight Assemblies:
- Reinstall the taillight assemblies and other items removed during installation, ensuring no wires are pinched or damaged.
-
Store the 4-Flat Connector:
- Route the 4-flat harness to the center of the vehicle and mount it in an accessible location using a bracket or electrical box (not included).
Safety Notes:
- Overloading circuits can cause fires. Do not exceed stated product ratings or vehicle manufacturer specifications.
- Always wear safety glasses and follow 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 Various Vehicles
Part Numbers:
- 118786
Tools Required:
- Trim Panel Remover
- 10mm Socket & Ratchet or Wrench
- Drill (3/32” Drill Bit)
- 1/4” Socket
- Wire Crimpers
- Wire Cutters
- Phillips Head Screwdriver
- Test Probe
- 8mm Socket & Ratchet or Wrench
Step-by-Step Instructions:
For All Vehicles:
-
Access Taillight Bolts:
- Open the rear door (or tailgate) to access the bolts holding the taillights in place.
- Remove the access covers on the trim panels (if applicable) using a trim panel remover to expose the bolts.
-
Remove Taillight Assemblies:
- Using the appropriate socket, remove the bolts holding the taillight in place.
- Carefully pull the taillight away from the vehicle to expose the vehicle’s taillight wiring harness.
- Repeat the process for both sides of the vehicle.
-
Locate the Taillight Wiring Harness:
- On both sides of the vehicle, locate the taillight wiring harness. The harness will have a connection point matching the ends of the T-One® Connector.
- Separate the connectors carefully, ensuring not to damage the locking tabs. Ensure all connectors are clean.
-
Connect Driver-Side T-Connector:
- Insert the T-One® Connector end with the yellow wire between the vehicle wiring connectors and lock it into place. Ensure connectors are fully inserted.
-
Route the Harness:
- Route the harness containing the green wire and 4-flat connector down the opening behind the driver-side taillight.
- Route the green wire underneath the vehicle and up through the opening behind the passenger-side taillight.
Warning: Avoid routing the wire near hot pipes, heat shields, or the fuel tank.
-
Connect Passenger-Side T-Connector:
- Insert the T-One® Connector end with the green wire between the vehicle wiring connectors on the passenger side.
-
Ground the White Wire:
- Locate a suitable grounding point near the connector on the driver’s side.
- Clean the surface of dirt and rustproofing.
- Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.
Caution: Verify what is behind the surface before drilling.
-
Connect the Power Wire:
- On the driver’s side, locate the black 12-gauge power wire from the T-One® Connector box.
- Attach the provided black wire and route it along the exterior frame or existing wiring to the engine compartment, avoiding hot pipes and sharp edges.
-
Connect to the Battery:
- Disconnect the Negative (-) battery cable.
- Remove the fuse from the yellow fuse holder.
- Attach the ring terminal to the Positive (+) battery cable and secure it.
- Connect the other end of the fuse holder to the black 12-gauge wire using the yellow butt connector.
Warning: Follow all warnings on the tow vehicle’s battery.
-
Reconnect the Battery and Test:
- Reconnect the Negative (-) battery cable.
- Insert the 15-amp fuse into the fuse holder.
- Test the installation with a test light or trailer. Reset the vehicle’s electrical system by temporarily removing the key from the ignition.
-
Mount the Black Box Module:
- Locate a flat surface and mount the black box module to prevent damage or rattling.
-
Secure the Wiring Harness:
- Use the provided cable ties to secure the T-One® Connector harness, avoiding areas that may pinch, cut, or melt the wire.
-
Reinstall Taillight Assemblies:
- Reinstall the taillight assemblies and other items removed during installation, ensuring no wires are pinched or damaged.
-
Store the 4-Flat Connector:
- Route the 4-flat harness to the center of the vehicle and mount it in an accessible location using a bracket or electrical box (not included).
Safety Notes:
- Overloading circuits can cause fires. Do not exceed stated product ratings or vehicle manufacturer specifications.
- Always wear safety glasses and follow safety precautions during installation.
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.
Manufacturer Notes:
- Refer to the vehicle owner’s manual and the instruction sheet for additional details.
- Store these instructions for future reference.
Warranty Information:
- For complete warranty instructions, please download the full installation PDF.
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.
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