Economy Round Trailer Light Kit with Wiring Harness Economy trailer wiring kit provides incandescent tail lights and wiring harness for trailers under 80 inches wide. Does not include clearance/side marker lights. Tail lights use standard 1157 bulbs. Kit contains 20 foot wishbone 4-flat trailer wiring harness and 4-flat car end connector. Lights included - 428-S and 428-W round Frame clips, wire taps and license plate bracket also included Read product description below for more information