so i have an 82 XL500 that has the wiring hacked up and i wanna make it street legal. I installed a head light and got the high and low to work. now i'm moving on to the tail light. i got it hooked up so it works, but backwards!! haha.. what'd i do wrong? when the bick is idling, the brake light is on, when you press the brake pedal it goes to the normal tail light.. what did i do wrong? what needs to be changed? thanks!