Review on Hopkins 43415 Plug-In Simple Vehicle Wiring Kit: Simplify and Enhance Your Vehicle's Wiring with Ease by Sean Baller

Easy to install. However, depending on the vehicle, you may need to swap the box on the right or left side. My 2002 OEM 4Runner box was on the driver's side, but this box had to be placed on the passenger side or the headlights were reversed. The only thing that had to be done was find a good hole to carefully insert 4 pins from the bottom - on the right side near the bottom skin pull out a square plug in the bottom, a little to the left you can run the wire through another small hole and it comes out right next to the spare tire making it a very easy and clean install.