I was unsatisfied with the brake and turn signal combos available online, so I made my own. It has running lights, brake lights, turn signals, and license plate illumination. I used high output LEDs and used the extra space on the PCB for heat sinking.

If you’re curious about the bike, it’s a 1983 Kawasaki CSR 305. Here’s a picture of it next to the Mississippi River.

More details about the brake light here.