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Standard 4-Wire Flat Plug Connectors and Kits



Standard 4-wire flat plug trailer wiring connector and splice nuts.

The 4-wire flat trailer connector is by far the most common trailer wiring connector on the road today. For many vehicles that have a common taillight/turn signal system (see below*) it provides a simple, easy connection between the tow vehicle and the trailer. The connectors show on this page can be used as replacements or extensions to current 4-wire flat connector systems. If you are familiar with your vehicle wiring system and want to install a simple 4-wire flat plug like those shown here, we recommend this universal (common bulb) trailer wiring kit (click here), which includes the 4-wire connector and other components that will make the installation easier (such as splice nuts which eliminate the need to cut, solder, or tape any wire).

* - You can tell if your tow vehicle (car, truck, station wagon, van or SUV) has a common tail light / turn signal system by looking at the taillights (you may have to remove the plastic lens). If the brake light and turn signal are inside a single bulb it is a COMMON bulb system. If you have separate bulbs for the brake light and the turn signal then it is an independent bulb system (CLICK HERE for a universal (independent bulb) trailer wiring kit)

NOTE: We strongly recommend searching this site (use your vehicle year, make and model information) for a Custom Trailer Wiring Kit. If one is available it will contain all the necessary parts you need for your vehicle, will be easier to install, and will provide a more secure connection.




Hoppy 4 Wire Flat 48 inch Car End - includes 3 splice connectors
12 inch Tow Vehicle End with 6 Splices
60 inch 4 Wire Flat Trailer Kit (48 inch Vehicle End And 12 inch Trailer End) With 6 Splices
Hoppy 4 Wire Flat 48 inch Car End - includes 3 splice connectors

$4.99
12 inch Tow Vehicle End with 6 Splices

$3.99
60 inch 4 Wire Flat Trailer Kit (48 inch Vehicle End And 12 inch Trailer End) With 6 Splices

$5.99
24 ft Trailer Kit (48 inch Vehicle End and 20 ft. Trailer End) With 3 Splices
12 inch Tow Vehicle End and 12 inch Trailer End with 6 Splices
12 inch Trailer End with 3 Splices
24 ft Trailer Kit (48 inch Vehicle End and 20 ft. Trailer End) With 3 Splices

$16.99
12 inch Tow Vehicle End and 12 inch Trailer End with 6 Splices

$4.99
12 inch Trailer End with 3 Splices

$3.99
10 ft. 4 Wire Flat Extension
36 inch 4 Wire Flat Knockout Connector
4-Wire Flat Extension - 48 inches
10 ft. 4 Wire Flat Extension

$12.99
36 inch 4 Wire Flat Knockout Connector

$7.99
4-Wire Flat Extension - 48 inches

$9.99
4 Wire Flat 12 inch Non-Shrouded Extension for Ford Tow Pkgs
4 Wire Flat 12 inch Non-Shrouded Extension for Ford Tow Pkgs

$6.99











Check owners manual for Vehicle towing capacities
Trailer Hitch Pictures and others may not depict actual items



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