Mine had to be wired into the plug. If I remember there was 2 light blue and 2 purple wires to one plug and the second plug had a blue, black, and red wire. Don't remember which wire does what. I'm just guessing that the blue, black, and red was taillight/running light, and light blue/purple wires were the blinkers. I believe the instructions that came with it said what wire is what but I can't find mine.