Where Does a Brake Controller Plug Into on a 1998 Ford F 150 and F 250 Light Duty
Question:
Would like to know if there would be a factory installed connector for the brake controller on that year. The location of it as well. I already have the brake controller but nothing else at this time. I will be installing the 7 blade to my 4 flat already on the truck from factory.
asked by: David C
Expert Reply:
Some 1998 Ford F-150 and F-250 Light Duty Trucks have a factory installed connector and some do not. This depends on if you have a factory tow package or not. To figure out if your vehicle has a tow package, you can contact your local Ford Dealer and give them your Vehicle Identification Number, and they will be able to tell you if you have a factory tow package. If you do have a factory installed brake controller wiring harness it will be near the diagnostic port on the underside of the dash.
If your towing package includes a 4-Flat connector, you will first need to add a 7-Way. For your truck, you will need the Ford Replacement OEM Tow Package Wiring Harness, # 118242. Follow the wires from the 4-Flat towards the front of the vehicle until you find a connection point, usually on the driver side between the rear tires and the end of the truck bed.
You will disconnect the factory connection, plug in the # 118242 and mount and ground the 7-way. You would then just need to install a brake controller and I recommend the Tekonsha Custom Wiring Pigtail # 3035-S to plug into the port beneath your dash and splices into the brake controller wires. The white wire is the ground, the black wire is the 12 volt power wire, the red wires is the input wire from the brake switch and the blue wire is the output to the trailer brakes. This will complete your brake controller installation. have included an FAQ article below on installing a brake controller on your F-150.
I have attached a video installation of the Tow Ready Custom Vehicle Wiring Harness on a 2001 Ford F-150. The installation process shown is the same for your 1998 Ford F 150. I have attached a wiring help article on how to install a brake controller on your truck which you may want to check out.

Product Page this Question was Asked From
Ford Replacement OEM Tow Package Wiring Harness, 7-Way
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- No Converter
- Factory Tow Package
- 7 Round - Blade
- Plug and Lead
- Plug-In
- Visible
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Brake Controller
- Video: Trailer Brake Controller Installation - 2004 Ford F-250
- Shop: Curt TriFlex NEXT Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional
- Shop: Trailer Wiring
- Shop: Pollak Installation Hardware for 7-Pole Harness and Bracket
- Search Results: 18140
- Search Results: c51110
- Search Results: pk12711u
- Search Results: c51322
- Search Results: 118242
- Shop: Ford Replacement OEM Tow Package Wiring Harness, 7-Way
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Video: Set up: Ford Replacement OEM Tow Package Wiring Harness, 7-Way on a 2002 Ford F-150
- Article: Trailer Wiring Diagrams
- Search Results: brake controller
- Search Results: proportional brake controller
- Article: Brake Controller Installation on a Full-Size Ford Truck or SUV
- Shop: Gooseneck Hitch
- Shop: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Ford, Lincoln, Mercury
- Shop: B&W Ball and Safety Chain Kit for Ford, GM, Chevy, and Nissan Titan XD Underbed Gooseneck Hitch
- Shop: Solera Awning Cradle Support - White
- Video: In-Depth Review of the Replacement Bottom Keeper for Polar Cam-Action Latch Kits
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Article: Trailer Drum Brakes vs. Disc Brakes: Making the Decision
- Video: B and W Underbed Gooseneck Trailer Hitch Ball and Safety Chain Kit Install - 2021 Ram 3500
- Shop: Trailer Hitch
- Video: Let’s Check Out the Ford Replacement OEM Tow Package Wiring Harness, 7-Way
- Q&A: Recommended Wiring for 1998 Ford F-150 to Add 7-Way to Factory 4-Way Trailer Connection
- Q&A: Comparison of Tekonsha Prodigy P3 and Primus IQ Brake Controllers
- Article: Replacement Automotive Lighting