21 years and never used it.

We’ve lived in our house for 21 years and for the whole time there’s been 3 lamps in the garden which we’ve never used. Recently I checked the wiring and set it so that any or all of the lamps can be powered from a Delta 3 in the Art Shack.
I haven’t used them in 21 years and probably won’t in the future, but they are now fully working if I suddenly decide to.