Converts 10-pin trailer connector to 7-pin trailer connector High capacity 14AWG wiring. Overview Easily convert your 10-Pin trailer connection to a 7-Pin trailer connector using our adapter harness. Experience. After over a decade in business, Diode Dynamics is the most trusted name in automotive LED lighting. Unlike all other LED distributors, we assemble and engineer products in the United States, for high quality and fast time-to-market of the newest and brightest LED technologies. We pride ourselves in offering only quality LED products, that will exceed your expectations. Please contact us if you'd like to discuss your lighting project!