Safer Charge LED Indicator install guide
First remove the original power LED on the Color and tin the highlighted vias
Solder the board to the vias, and the link port pad for ground as highlighted
If you are installing it on a board other than the colour, you can solder wires from the BATT+ pad to the battery voltage and 5V pad to 5V.
The small plastic dome included is a LED diffuser, please put this where the LED would sit in the shell