Okay, I think it is really funny when a guy is actually working on his bike and something doesn't go right so he runs inside the house and gets on the computer and asks questions here on Thumper Talk. Well the joke is on me! I am attempting to hook up my new Nissin hydrolic brake swith to the tail light to make it a brake light. (03 WR) The rear bulb is a dual fil. and there are three wires running in the harness. A yellow, black and blue. Which two do I splice into to get the light to come on. Any of you intellects know?