The problem is making them sequential. The brake lights and the turn signals use the same wire. If I put a circuit between the right-left light and the right-right to make them sequence, they will also sequence when I hit my brakes. I would want them to sequence every time they turn on (blinking turn signal) but both turn on at the same time when I hit my brakes. (that's just me though). Shouldn't be too hard to etch some boards, drill holes, solder LEDs and resistors, etc. but I don't have any spare time. Somebody that wants to try this has everything available at an electronics surplus store.
