Fitment: This trailer wiring is Fit Model Y 2021-2023, Vehicle battery connection required
Application: This 4-Pin trailer wiring harness connecting trailer tail lights, brake signal lights and turn signals, which allows the signals on the trailer to the signals on the trucks you are driving and improving driving safety
Construction: The 4-Pin flat trailer connector is dust, moisture, corrosion and long-lasting use
Easy To Install: The Installation of this trailer hitch receiver wiring harness kit is quick and easy with a plug & play design connector, Unplug the connection and insert the plug into the vehicle's harness on the factory tail light assembly
Package Including: 1 x 4-Pin Trailer Wiring Harness with installation instructions (including black signal converter, plug&play connector, red fuse and holder, Standard 4-pin trailer wiring connector, Battery connection wire ,and other necessary wiring components )