Trailer Hitch Wiring Harness Kit For 12‑19 Ford Focus Plug & Play
Model: 118548Wiring Harness (Plug & Play)
Installation Instructions
Fits The Following Vehicles
2012 - 2019 Ford, Focus, Sedan
Wiring Kit Specs:
| Part Number | 118548 |
| 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:
12 13 14 15 16 17 18 19 2012 2013 2014 2015 2016 2017 2018 2019
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Product Details
- Brand: Tekonsha
- Model: 118548
- UPC: 016118111453
- Includes: T-One T-Connector Custom Harness
Compatibility Chart
Description
Wiring Harness (Plug & Play)
Installation Instructions
Fits The Following Vehicles
2012 - 2019 Ford, Focus, Sedan
Wiring Kit Specs:
| Part Number | 118548 |
| 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:
12 13 14 15 16 17 18 19 2012 2013 2014 2015 2016 2017 2018 2019
Get Expert Help
Trailer Hitch Wiring Harness Kit For 12-19 Ford Focus Plug & Play Install Notes
Installation Instructions for T-Connector Adapter for Ford Focus Sedan
Part Numbers:
- 118548
Tools Required:
- Trim Panel Remover
- 10mm Socket & Ratchet or Wrench
- Drill (3/32” Drill Bit)
- Wire Crimpers
- Wire Cutters
- Test Probe
- Phillips Head Screwdriver
Step-by-Step Instructions:
-
Open the Trunk:
- Remove the threshold panel.
- Partially remove the felt trunk liner on both sides to expose the vehicle’s taillight wiring harness.
-
Locate the Taillight Wiring Harness:
- On the driver’s side, locate the vehicle’s taillight wiring harness and separate the connectors carefully without breaking the locking tabs.
- Ensure that the mating surfaces of the vehicle harness connectors match the T-Connector ends and are clean and free of dirt.
-
Connect the Driver-Side T-Connector:
- Attach the T-Connector end containing the yellow and brown wires between the vehicle’s wiring connectors.
- Ensure the connectors are fully inserted and the locking tabs are secure.
-
Route the Passenger-Side T-Connector:
- Route the T-Connector containing the green wire below the threshold cover to the passenger’s side taillight housing.
- Repeat Step 3 using the T-Connector ends containing the green and red wires.
-
Mount the Black Box:
- Locate a flat surface on the driver’s side in an out-of-the-way location.
- Mount the T-Connector’s black converter box using the provided double-sided tape.
-
Ground the White Wire:
- Locate a suitable grounding point on the driver’s side near the connectors.
- Drill a 3/32” hole and secure the white wire with the provided eyelet and screw.
Caution:
- Verify what is behind the surface before drilling to avoid damage to the vehicle or personal injury.
-
Connect the Power Wire:
- On the driver’s side, locate the red 12-gauge power wire from the T-Connector box.
- Attach the black 12-gauge wire provided using the yellow butt connector.
-
Route the Black Wire:
- Route the black wire either through a grommet along the exterior frame or follow existing wiring along the thresholds into the engine compartment up to the battery.
- Avoid areas that may pinch or damage the wire.
-
Connect to the Vehicle Battery:
- Disconnect the vehicle’s negative (-) battery cable.
- Attach the yellow fuse holder to the vehicle’s positive (+) battery cable using the provided ring terminal.
- Connect the black wire to the fuse holder using the yellow butt connector.
- Insert the 10-amp fuse into the fuse holder.
-
Reconnect the Battery:
- Reconnect the vehicle’s negative (-) battery cable.
Warning:
- Ensure all connections are complete for proper functionality. Test with a test light or trailer to verify the installation.
-
Secure the Wiring:
- Use the provided cable ties to secure the T-Connector harness, avoiding areas that may pinch, cut, or melt the wire.
-
Reassemble the Vehicle:
- Replace the plastic trim panels, threshold, storage covers, floor covering, and other items removed during installation, ensuring no wires are pinched.
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 the towing manufacturer’s rating or the specified maximum circuit ratings.
- Always wear safety glasses and follow all safety precautions during installation.
Manufacturer Notes:
- Refer to the vehicle owner’s manual and instruction sheet for additional details.
- Store the 4-flat connector in the side storage compartment when not in use.
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