I own a lexus 2000 gs300 with a spoiler the light is out. I am aware of the two clips that are attachted to the brake lights one is a green wire and the other is a white wire. I want to know which wire is positive and which wire is negative just in case the clips have been reversed. my second queston is where in the hell do i find this bulb to replace the bulb if it is bad? I have looked at all websites for parts and they sell the spoiler with the light and not just the light by itself. any ideas? thanks again