Train Signals 3-Lights Toy

Needed hardware:
Red,Yellow, Green LED 8mm
3 x resistors - use a calculator for right value, depend on LEDs
3 x 6x6mm micro-switches
2 x AAA battery plus contact
2 x AAA battery minus contact
Wires
Heat shrink tubing
M3x10 screw
2 x M2x10 screw

Under knob use a little bit of grease.

Good luck :)

LED layout is like this: https://www.amazon.com/JTD873GYR-Railroad-Signals-3-Lights-Green-Yellow-Red/dp/B07FGFH57F