1. Some parts needs in this project.
2. Soldering.
3. Finished.
Product list:
wire link:https://www.utsource.net/category/accessories-tools/wires-cables-1.html
battery link:https://www.utsource.net/category/electromechanical-1.html
soldering iron link:https://www.utsource.net/category/accessories-tools/tools-1.html
led light link:https://www.utsource.net/category/led-lighting-1.html
switch link:https://www.utsource.net/category/electromechanical-1.html
More details, pls check the video on Youtube: