Parts Needed to Add 7-Way Wiring Harness to 1999 Ford F-150
Question:
i am ordering electic brake parts but I need the rear harness to plug in factory wiring on a 1999 f150
asked by: Jim W
Expert Reply:
The correct rear wiring harness depends on what you currently have on your 1999 Ford F-150. If you have a factory 4-flat then you will be able to use the Ford Replacement OEM Tow Package Wiring Harness, 7-Way # 118242. This will plug into the OEM connector on your truck, which it sounds like you have.
If you do not have the factory 4-flat with the tow package connectors you will need to start by adding a 4-way. I recommend the T-One Vehicle Wiring Harness # 118344. Once installed, you will be able to upgrade to a 7-way using the Universal Installation Kit # ETBC7. This kit comes with the adapter, wiring, and everything else you need to add a 7-way to your truck.
I have attached some review and installation videos for your reference.

Products Referenced in This Question
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 4 Flat
- Tekonsha
more information >
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Product Page this Question was Asked From
Ford Replacement OEM Tow Package Wiring Harness, 7-Way
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 7 Round - Blade
- Tekonsha
more information >
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