The known problem of the WE1010 Weller stations is the lack of a pilot light or the display's backlight. As a result, it is easy to forget that the station is left ON after working with it. This video shows step by step how to install the indicator light.

You may also take a look at a different solution to this project that does not require drilling holes in the case. Credit for the other solution goes to Adapting Camera    • Weller WE 1010 - A simple modification  

Weller soldering station WE1010 on Amazon:
https://www.amazon.com/dp/B077JDGY1J
A sample of pilot LED lamps available on Amazon:
https://www.amazon.com/dp/B09L7W7HKL