My house has all old work 1970. No grounds that I’ve seen yet. My issue is I have a trickle switch where one controls the porch one controls, the dining and one controls the outside light the one that controls the tiny the dining room is also controlled by a switch on the opposite wall, I bought this triple switch thinking it would work because I couldn’t see the wiring in the back. There’s a lot of wires in this old work and not a lot of wires on this new switch. Some of them are jumped on the old work.
It’s all old sheets wiring with no metal jackets or anything. The boxes are not metal though this old switch seems to have some kind of metal jacket on it.
These houses have single wall construction. I’m in Hawaii.







