Trailer Wiring and Bracket w/ Light Tester For 16‑21 Honda Civic Sedan Plug & Play 4‑Flat Harness
Model: 118686 118144 20114Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
Fits The Following Vehicles:
2016 - 2021 Honda, Civic, Sedan
Direct Plug & Play Wiring Kit
Wiring Specs
| Part Number | 118686 |
| 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 |
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 21 2016 2017 2018 2019 2020 2021
$98 21 $129.80 24% OFF
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$129.80 $98 21
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Product Details
- Brand: Tekonsha
- Model: 118686 118144 20114
- Includes: T-One T-Connector Custom Harness, Mounting Bracket, 4-Flat Car End Tester
Compatibility Chart
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
Fits The Following Vehicles:
2016 - 2021 Honda, Civic, Sedan
Direct Plug & Play Wiring Kit
Wiring Specs
| Part Number | 118686 |
| 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 |
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 21 2016 2017 2018 2019 2020 2021
Get Expert Help
Trailer Wiring and Bracket w/ Light Tester For 16-21 Honda Civic Sedan Plug & Play 4-Flat Harness Install Notes
Installation Instructions for T-One® T-Connector for Honda Civic Sedan
Part Numbers:
- 118686
Tools Required:
- Trim Panel Remover
- Drill (3/32” Drill Bit)
- Phillips Head Screwdriver
- Test Probe
- 10mm Socket or Wrench
- Wire Crimpers
- Wire Cutters
Step-by-Step Instructions:
-
Remove the Taillights:
- Open the trunk and remove the taillights on both the driver and passenger sides.
- Carefully pull the taillights away from the vehicle, avoiding damage to the alignment pins.
-
Locate the Taillight Wiring Harness:
- On both the driver and passenger sides, locate the vehicle’s taillight wiring harness.
- Disconnect the harness connectors carefully, ensuring not to break the locking tabs.
-
Prepare the Grommet:
- Temporarily remove the rear threshold plate and partially remove the felt trunk liner behind the taillights.
- On both sides, unseat the grommet where the vehicle's taillight wire harness passes through.
-
Route the Driver-Side T-Connector:
- Slit the grommet on the driver’s side to allow the trailer wiring harness access.
- Route the T-Connector with yellow and brown wires through the grommet and reseat it.
-
Connect the Driver-Side T-Connector:
- Locate the green 2-pin connector in the driver-side taillight housing and disconnect it.
- Insert the T-Connector end with the yellow wire between the vehicle wiring connectors.
- Ensure the connectors are fully inserted with locking tabs in place.
-
Connect the Brown Wire:
- Locate the black 3-pin connector in the driver-side taillight housing and disconnect it.
- Insert the T-Connector end with the brown wire between the vehicle wiring connectors and lock into place.
-
Route the Passenger-Side T-Connector:
- Route the T-Connector end with the green wire to the passenger side behind the panels and along the threshold.
- Repeat the grommet preparation step for the passenger side.
-
Connect the Passenger-Side T-Connector:
- Repeat the driver-side connection steps for the passenger side using the T-Connector with the green and red wires.
- Locate the blue 2-pin connector in the passenger-side taillight housing and insert the T-Connector with the red wire.
-
Ground the White Wire:
- Locate a suitable grounding point near the connector and clean it 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 to prevent damage or injury.
-
Connect the Power Wire:
- Inside the vehicle, connect the black 12-gauge wire from the T-One® T-Connector black box using the supplied yellow butt connector.
- Route the black wire through a grommet and along the exterior frame or follow existing wiring to the engine compartment.
Warning: Avoid routing the wire near hot pipes, heat shields, or other hazardous areas.
-
Connect to the Vehicle Battery:
- Disconnect the vehicle’s Negative (-) battery cable.
- Attach the ring terminal from the fuse holder to the Positive (+) battery cable.
- Connect the other end of the fuse holder to the black 12-gauge wire using the yellow butt connector.
-
Reconnect the Battery and Test:
- Reconnect the vehicle’s Negative (-) battery cable and 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:
- Mount the T-One® T-Connector’s black box module on a flat, out-of-the-way surface to prevent damage or rattling.
-
Secure the Wiring Harness:
- Use the provided cable ties to secure the T-Connector harness, avoiding areas that may pinch, cut, or melt the wire.
-
Reassemble the Vehicle:
- Reinstall the taillight housing assemblies, positioning the vehicle wiring harness between the housing and the body.
- Reinstall the felt trunk liner, threshold, and any other removed components.
-
Store the 4-Flat Connector:
- Store the 4-flat connector in the trunk area when not in use.
Specifications:
- Max. stop/turn light: 2 per side (4.2 amps)
- Max. tail lights: 7.5 amps
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 Honda Civic Sedan
Part Numbers:
- 118686
Tools Required:
- Trim Panel Remover
- Drill (3/32” Drill Bit)
- Phillips Head Screwdriver
- Test Probe
- 10mm Socket or Wrench
- Wire Crimpers
- Wire Cutters
Step-by-Step Instructions:
-
Remove the Taillights:
- Open the trunk and remove the taillights on both the driver and passenger sides.
- Carefully pull the taillights away from the vehicle, avoiding damage to the alignment pins.
-
Locate the Taillight Wiring Harness:
- On both the driver and passenger sides, locate the vehicle’s taillight wiring harness.
- Disconnect the harness connectors carefully, ensuring not to break the locking tabs.
-
Prepare the Grommet:
- Temporarily remove the rear threshold plate and partially remove the felt trunk liner behind the taillights.
- On both sides, unseat the grommet where the vehicle's taillight wire harness passes through.
-
Route the Driver-Side T-Connector:
- Slit the grommet on the driver’s side to allow the trailer wiring harness access.
- Route the T-Connector with yellow and brown wires through the grommet and reseat it.
-
Connect the Driver-Side T-Connector:
- Locate the green 2-pin connector in the driver-side taillight housing and disconnect it.
- Insert the T-Connector end with the yellow wire between the vehicle wiring connectors.
- Ensure the connectors are fully inserted with locking tabs in place.
-
Connect the Brown Wire:
- Locate the black 3-pin connector in the driver-side taillight housing and disconnect it.
- Insert the T-Connector end with the brown wire between the vehicle wiring connectors and lock into place.
-
Route the Passenger-Side T-Connector:
- Route the T-Connector end with the green wire to the passenger side behind the panels and along the threshold.
- Repeat the grommet preparation step for the passenger side.
-
Connect the Passenger-Side T-Connector:
- Repeat the driver-side connection steps for the passenger side using the T-Connector with the green and red wires.
- Locate the blue 2-pin connector in the passenger-side taillight housing and insert the T-Connector with the red wire.
-
Ground the White Wire:
- Locate a suitable grounding point near the connector and clean it 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 to prevent damage or injury.
-
Connect the Power Wire:
- Inside the vehicle, connect the black 12-gauge wire from the T-One® T-Connector black box using the supplied yellow butt connector.
- Route the black wire through a grommet and along the exterior frame or follow existing wiring to the engine compartment.
Warning: Avoid routing the wire near hot pipes, heat shields, or other hazardous areas.
-
Connect to the Vehicle Battery:
- Disconnect the vehicle’s Negative (-) battery cable.
- Attach the ring terminal from the fuse holder to the Positive (+) battery cable.
- Connect the other end of the fuse holder to the black 12-gauge wire using the yellow butt connector.
-
Reconnect the Battery and Test:
- Reconnect the vehicle’s Negative (-) battery cable and 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:
- Mount the T-One® T-Connector’s black box module on a flat, out-of-the-way surface to prevent damage or rattling.
-
Secure the Wiring Harness:
- Use the provided cable ties to secure the T-Connector harness, avoiding areas that may pinch, cut, or melt the wires.
-
Reassemble the Vehicle:
- Reinstall the taillight housing assemblies, positioning the vehicle wiring harness between the housing and the body.
- Reinstall the felt trunk liner, threshold, and any other removed components.
-
Store the 4-Flat Connector:
- Store the 4-flat connector in the trunk area when not in use.
Specifications:
- Max. stop/turn light: 2 per side (4.2 amps)
- Max. tail lights: 7.5 amps
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.
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:
For complete warranty instructions, please download the full installation PDF.
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