Review on Custom 4-Pin Trailer Wiring Harness for Subaru Impreza Hatchback by CURT (56111) - Vehicle-Side Solution by Rafael Lewis

Custom-fit, easy-easy. Remove the taillights (2 screws each side), disconnect the wiring harness and snap it into place. Ready in 5 minutes - for both sides. Another issue was the wiring to the battery. The instructions were (erm) pretty vague. There's no room to run wires under a car that doesn't cross things that spin, bounce, or get very hot. I ran a 12v wire in the car to an accessory. Socket in the center console between the seats. Fiddle with the finish for about an hour. Total installation time approx. 2 hours: 5 minutes for taillights, 1:55 for battery cables.