Picked up an LED light kit for the Ender 3 Pro but found that brightness control knob extended just a bit too far beyond the bottom of its housing. This causes the knob to press against the extrusion when the housing is attached, I designed a simple spacer that gives the knob a bit of clearance and everything works well now.

The LED bar is branded POJECITY and can be found on Amazon: https://www.amazon.com/gp/product/B0B44P5SFP/