Wesbar 66" Trunk - Trailer Connector KitWesbar harnesses conform to all applicable SAE, NMMA, and TMA standards to provide years of dependable service. Standard 4-way harnesses have an 18" ground wire except where noted. Wesbar's 5-way plugs mate with all Wesbar 4-way plugs and will operate all DOT required lights. 4-Flat Trailer End Connector; 18" Wishbone Harness; 18" Ground w/ 4' Car End; 18" Ground;