i got this switch with numbers 1 , 2, 3, and 4 on it and 4 wires red, green, and two black. Which wires go to which number?
Well it is defintely a 3 way switch. The fourth (green) wire being the ground. I can't tell you by the numbers, but I can tell you by the screws which wire goes where. If it does not apply to your switch you may need to go get a new one. They are inexpensive. The green, ground wire goes to the screw that is usually attached to the arms ( metal extentions that hold against the sheet rock. Now you need to find the red and black wire that are together. Look inside the box where the wires come in and you should be able to tell if the red and black are in the same sheathing. These are your travelers. The travelers need to go on the two screws that are across from eachother. One goes on the right side and one goes on the left. Does not matter which side. The last black wire, depending on which of the two 3 ways you are at is either your power or your light leg (wire going to your light). This wire goes on the last screw. Hope this was helpful.
