Need help! I just bought a 2006 zx-6r a month ago and now the brake light is not working so i'm going to try and change it... does anyone know the best/easiest way to do this with the hotbodies undertail on it?

 

Looking at the instructions on the Hotbodies website is no help. Most undertails result in hand-contortion to access the taillight bulbs. I'm no expert on the '06 6, but I would suggest getting some soft jaw pliers to reach through the space under your (removed) passenger seat. You may want to inspect the wiring, as the undertail installation process can pinch wires and cause shorts; may not be your bulb(s) at all. However, if it IS the bulbs, I'd replace with LED's (like an 1157 bulb only LED).
Good luck!