so when you aply pressure to your brake your pushing more amps into your lightin. led lights dont take that much so what you might need to get is a resister. before you do that though take a test light and/or an ohm meter to your wires before and after aplying the brake. this will tell you were your power is going an if you have a short somewhere. i work with electronics as a hobby so if you need anymore help let me know ill do what i can.