wiring
I am replacing a toggle light switch. The switch has one ground screw and two terminal screws.
I can’t figure out which wires go to which screws.
Coming out of the box are three white wires connected together, two black wires connected together, one red wire, and one black wire.
Based on what you've shown, you should be able to wire it up like this...
However, those red Wing-Nut® twist-on wire connectors are only rated for a maximum of 6 #14 conductors. So you'll have to split up the neutrals in to two groups, and connect the groups with a pigtail between them.
Easy.
Best Answer
You only need to connect the red and the black to the terminals with brass-colored screws. It doesn't matter which terminal gets which wire. There's no ground wire in the box, so you have nothing to attach to the green ground terminal. You should put a wire nut on the connection of two black wires.