Okay, so i bought this 2003 Chevy Avalanche. Its the 2500 model. On the right hand side of the dash there is an Auxiliary push button switch with a little orange LED that lights up when you press it to turn on a light. I plow with this truck, so i want to set my Beacon light to work with it. However, i have no idea where the wires that go from it lead to. I have been told behind the Top rear brake light, but that paneling is impossible to take off. Then i was told in the cieling by the driver door. I have no idea how to access that. Someone please help me.