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When you just need to add basic trailer lighting—running, turn, and brake lights—the Hopkins Vehicle Wiring Harness with 4-Pole Flat Trailer Connector gets the job done. It provides a straightforward 4-flat plug at the back of your vehicle so your trailer lights will work right away.
If your vehicle doesn’t have a factory tow package, this harness makes it easy to wire in trailer lighting. The splice-in leads connect directly to the tail light circuits so you can hook up a trailer even when there’s no pre-wired connector available.
The plug-and-lead setup keeps wiring secure and organized. Each wire runs directly from the vehicle connection point to the 4-flat trailer end, giving you a solid link for consistent signal transfer and dependable lighting performance.
Once you have this 4-way installed, you can easily step up to a 7-way setup later using an installation kit like # ETBC7. That lets you add electric brake control or a 12-volt charge line without having to start over with new wiring.
Ratings & Reviews
Excellent as always
Works as needed!! Thanks guys!
Excellent product for the price item arrived faster than expected
Easy install, works great
Wire pigtail was not where the instructions said it would be. I’ll remove interior walls on a later date to see if I can locate
Just what I needed for my electrical hookup for may trailer
Fits the Hopkins "box" connector, also sold here on etrailer; my box came with a dealer-installed hitch for my 2018 Subaru Outback.
The included dust cover has a thicker lanyard than the one replaced; that's good.
Arrived quickly via USPS.
Very pleased.
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Robert P.
11/24/2021
Doing well at one year. Rubber lanyard that retains dust cover is intact.