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CURT Custom Wiring Harness #56165

Class: Wiring UPC: 612314561650

Where To Buy

MSRP $66.72

  • Plugs into vehicle tail light assembly to provide a 4-way flat socket
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • Equipped with a powered 3-wire to 2-wire tail light converter
  • Constructed with SMT circuitry for better performance and durability
  • Dust cover included to keep connector clean when not in use
  • Backed by a limited one-year warranty


  • Includes powered 3-wire to 2-wire electrical converter with wiring kit (connection to battery required)
Instruction Sheet Download pdf
Installation Video
T-Connector Location S3,S4
Shipping Weight 1.730
Battery-Powered Yes
Part Type Custom Wiring Harness
Warranty One Year Limited
Turn and Brake Circuits 7.5 Amps
Tail Light Circuits 7.5 Amps
Electrical System Type 3W
Output Type 4-Way Flat
Converter Type Circuit Protected and Powered with Relay
UPC 612314561650

Additional Information

A CURT custom wiring harness (also called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring.

Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT''s custom wiring harnesses come into play. Custom wiring harnesses plug into your vehicle''s electrical system using original equipment (OEM) connectors. Our custom wiring harnesses use two or more OEM connectors to plug in at the taillight assembly and provide a standard trailer socket to allow a trailer to be plugged into your vehicle''s power system.

This harness provides a 4-way flat connector socket and comes with a circuit-protected converter. It is designed to be a custom wiring harness for certain years of the Toyota Rav4 (to verify your vehicle compatibility, see the CURT application guide at CURT custom wiring harnesses are long-lasting and quick to install. They come with dust covers to keep your connector clean when not in use and feature a one-year limited warranty to give you peace of mind.


Year Make Model Style Install Time Other Hitches
2008 Toyota RAV4 All
2010 Toyota RAV4 All
2011 Toyota RAV4 All
2009 Toyota RAV4 All
2012 Toyota RAV4 All
2006 Toyota RAV4 All
2007 Toyota RAV4 All
7 Total Vehicles


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Easy to put in the back part. The back side run to the passenger side light would have been better if it was about 6" longer. If the passenger light run was a bit longer the unit could have been mounted to a more flat surface. Double sided sticky tape was weak, not aggressive enough to hold the unit in the Texas heat for more than a few minutes, had to get a more aggressive tape. They don't give you enough wire ties, in my opinion, to mount the wire to the battery wire run--so there isn't a vibration issue over time, I used many more ties. The wire ties came rubber banded so they were bent in the opposite direction that would have been useful--you had to unbend the ties to the opposite direction so you could connect the ends. Much easier if you have access to a lift. The crimp connectors supplied were mostly for 12 gauge wire, all the wires are 14 gauge (mostly) I used heat shrink but splices but 14-16 gauge. Engineer who designed installation should have to install a few, without a lift. Once installed the unit is good.


Installation Video