Weekend-warrior DIYer here. I'm replacing a light fixture. The electrical box doesn't have a grounding wire coming out from it, so I was going to go the green-screw-to-green-screw route. However, the grounding wire attached to the mounting strap on the previous fixture was not actually attached to anything on the other end.
I think it was left that way because there is no area on the box to attach a screw to. In other words, there are no other holes besides the two to attach the strap.
How can I fix this? I'm assuming I couldn't just tape the screw/wire to the metal box so that it's touching metal?! TY!