Hook it up to the original wires for the stock license plate light. CUt off the original connector and splice/connect to the undertail light's red & white wires. Red being positive. Looks clean and turns it into plug and play. Doubt that you'll need a resistor but ur preference of fast blink or normal speed blink. :YEAI just finished mounting the fe kit for my bike, and it came with a tag light, but I dont know how to wire it up. Its a red and white wire going to the light. If anyone can tell me how to hook the light up I would appreciate it.