Summary

This allows the headlamp of an e-bike to be dipped to help comply with headlight regulations. Works with this very common light https://www.amazon.com/dp/B0F2SYQ6ZR

5 3mm self-tapping screws are used to secure it to the light housing, and a linkage rod is attached with M5 hardware. I made a little knob to go on the top of the 8mm aluminium rod I used for a lever, and have attached that simple file too.