CURT 55316 - 4-FLAT WIRE HARNESS 87-96 F-SERIESCURT 4 FLAT CUSTOM WIRING ; 87 96 F SERIES 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 Dust cover included to keep connector clean when not in use Backed by a limited one year warranty Installation Difficulty: Novice Installation Time (Minutes): 5