1. Remove the original power LED 

Tin the highlighted vias.

2. Solder the board to the vias 

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