I would like to do a smaller low profile version at some point, the wood screw were just to test. I will buy some nuts and bolts to fit when stores open again. While researching it I did come across a similar version for sale on a website. Maybe a newer or reproduction part. Thanks again, I’m going for a ride!

Mystery solved! It is a break switch. I noticed a sliding lock nut and attached the spring, then attached the wires and now the break light gets brighter with rear break lever. Thanks you for taking the time to answer my questions. Strangest brake switch ive ever seen.

Thank you. That would make sense, I have a running light but no change/brightness when I use my brake. It looks like 1 piece is missing/broke/removed. I can find much info about it.

Thank you. That would make sense, I have a running light but no change/brightness when I use my brake. It looks like 1 piece is missing/broke/removed. I can find much info about it.