Tow Ready 7-Way Trailer Wiring Adapter Upgrade – Fits 1999-2001 Ford Super Duty F-250 / F-350 / F-450 / F-550 (Part #118243)
Upgrade your factory 4-flat connector to a full 7-way OEM-style trailer connection with the Tow Ready 118243 harness kit. Engineered for 1999–2001 Ford Super Duty trucks, this plug-and-play system installs cleanly into existing wiring — no cutting or splicing required. Includes OEM connectors, weather-sealed wiring, relays, and fuses for reliable brake, charge, and lighting circuits.
Specifications
| Part Number | 118243 |
| Brand | Tow Ready / Tekonsha |
| Vehicle Fitment | Ford Super Duty F-250 / F-350 / F-450 / F-550 (1999–2001) |
| Connector Type | Upgrades Factory 4-Flat to 7-Way Blade (RV Style) |
| Power Source | 12 V Battery Feed with Inline Fuse Protection |
| Included Relays / Fuses | Yes – Relay Pack and Factory-Style Fuse Set Included |
| Mount Location | Rear Bumper / Hitch Area and Under-Hood Fuse Panel |
| Installation | Plug-In OEM Harness – No Splicing Required |
Included Components
- OEM-Fit 7-Way Connector Harness with Weather-Sealed Plugs
- Relay Module and Mounting Bracket
- Fuse Assembly for Trailer Charge and Brake Power
- Zip Ties and Hardware for Installation
- Detailed Installation Instructions
Fitment & Use
Designed for Ford Super Duty trucks (1999–2001) with factory 4-flat connectors. Provides a complete OEM-style 7-way trailer output for electric brake controllers, battery charge lines, and auxiliary power circuits. Perfect for towing campers, cargo trailers, and equipment with standard 7-blade connectors.
Why Upgrade to Tow Ready 118243
- OEM-grade plugs and terminals ensure tight, weather-proof connections.
- Complete kit with fuses and relays — no additional parts needed.
- Plug-and-play design installs quickly with factory mounting points.
- Compatible with Tekonsha, Draw-Tite, and Reese brake controllers.