As kiriba-ru mentioned , led4power sells Illuminated Tailcap Switches from his web page :
https://led4power.com/product/ilc-0-illuminated-tailcap-switch-module/
There is some more info in his thread :
As kiriba-ru mentioned , led4power sells Illuminated Tailcap Switches from his web page :
https://led4power.com/product/ilc-0-illuminated-tailcap-switch-module/
There is some more info in his thread :