The 3-wire pigtail has a male plug on one end that pairs with the female connection on the back of your stop tail turn light. Color-coded wire lead is 10 In. long. Use the white wire for ground, black wire for tail light and red wire for turn signal. Provides power connection for stop tail turn, warning and park/turn lights. Right angle plug design. Plug has male pin and pairs with the female connection on the back of the light. 20 gauge wire. #10 Ring terminal on ground wire