Trailer Wiring and 5th Wheel Trailer Wiring for a 1999 Ford F-250
Question:
I do a lot of towing both 5th wheel and bumper tow with a 99 F-250. Looking for a plug and play harness/s for both ends.
asked by: Steve M
Expert Reply:
First, we can start with regular trailer wiring for the back of the truck. If the truck does not have any type of trailer connector then you would start be adding a 4-Way using # 18252. Then, to add a 7-Way you would need to use 4 and 7 way installation kit # ETBC7. This will provide a 7-Way while keep the 4-Way functional and it includes the wiring and accessories needed to add a brake controller.
Then to add a 7-Way in the bed of the truck for the 5th wheel trailer, you can use # 20027 which is an extension loop and plug it into the 7-Way at the back when needed.
If the truck came with a factory 4-Way you can add a 7-Way using # 118243 which includes the relays and fuses you will need to add to make it fully functional. Then you could use in-bed 5th wheel harness # PK11893-11932.
If the truck has a 7-Way then to add in-bed wiring for the 5th wheel use # PK11893-11932 and you will not need anything else. I have included some videos and other links to help.
For a brake controller, I recommend the P2 # 90885. If the truck has a 4-Way or 7-Way from the factory use harness # 3035-P to install the brake controller. Or if it does not have any wiring harness and you did the ETBC7 installation you will not need the 3035-P harness and will follow the FAQ I linked.
Products Referenced in This Question
Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty)
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 7 Round - Blade
- Tow Ready
more information >
4-Way Flat Trailer Connector w/ 72" Harness, Circuit Tester and Wire Taps
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- 6 Feet Long
- Universal Fit
- 4 Flat
- Tekonsha
more information >
- Custom Fit Vehicle Wiring
- Fifth Wheel and Gooseneck Wiring
- 7 Feet Long
- Universal Fit
- 7 Round - Blade
- Draw-Tite
more information >
Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Ford, Lincoln, Mercury
- Accessories and Parts
- Trailer Brake Controller
- Wiring Adapter
- Plugs into Brake Controller
- Vehicle Specific
- Tekonsha
more information >
Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LED Display
- Up to 360 Degrees
- 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 >
Pollak 5th Wheel / Gooseneck T-Connector with 7-Pole - Ford, GM, Dodge, Nissan w/ Factory Plug
- Custom Fit Vehicle Wiring
- Fifth Wheel and Gooseneck Wiring
- 7-1/2 Feet Long
- Custom Fit
- 7 Round - Blade
- Pollak
more information >
Product Page this Question was Asked From
Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 7' Long
- Custom Fit Vehicle Wiring
- Fifth Wheel and Gooseneck Wiring
- 7 Feet Long
- Custom Fit
- 7 Round - Blade
- CURT
more information >
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