I want to replace a switch with a timer switch, however on checking out the wiring the two original switches have a black wire connecting the two. The switch I want to replace is the rightmost switch. Here's a picture:
Am I correct in thinking that the Hot wire is the bottom wire coming into the left switch, then is connected to the right switch? So when adding my new switch I can use that linked hot wire?
Also, I see ground (copper) wires affixed to screws at the back of the electrical box. Can I simply fasten my new timer switches ground (green) wire onto one of these screws to ground it? Not sure they are long enough to attach to a wire nut