I have a Cooper 7503W-Box switch that I want to use to replace a rotary dimmer wall switch. From the wall I have one white wire that is connected to a red wire on the existing switch, a black wire that is connected to a black wire on the existing switch, a red wire connected to a second red wire on the switch, and a bare ground wire that is NOT being used by the existing switch. My question is how do I connect the new Cooper switch to my house wiring? I know the ground goes to the green terminal and the black wire goes to the black terminal but I'm unsure which terminals to attach the remaining white and red wires. Thank you.

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http://waterheatertimer.org/How-to-Replace-outlet-with-combo-switch.html

Gene
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Could be several reasons, but here's what i think is most likely. First, there are other wires in the box that are not connected to the switch - 4 ground wires all connected together, and 4 white wires all connected together. You only 1 hot black wire coming into the box. This wire goes to one side of the switch, but it is tied to a 2nd black wire that is going on to something else (like another switch or an outlet). That counts for two of the black wires. The other two black wires are on the output side of the switch and are going to two places - pehaps the switch is used to control two ceiling light fixtures. The good news is that unless you have a lighted switch there is no difference between the IN side and OUT side of the switch - it works the same either way, and you can connect the switch just like the dimmer was hooked up - even if my explanation of why is not exactly your situation. Good luck!

make sure your application is correct first,this switch is controlled from at least 2 locations,you cant put 2 dimmers on the same light,if you have taken the wires directly off the switch you will wire the white to the black of the dimmer and the 2 reds to each of the other wires,the white in this case is you pivot or constant hot,the other wires are the travelers

Cooper 7503w is a 3-way switch.
It sounds like you purchased correct switch.
Remember, fixya answers questions about products. We don't sell Cooper wiring devices.

You have a continuity tester which is excellent, because electricians test, they don't guess.
Hopefully you have a voltage tester for testing steps shown below images.
Notice that new switch has 1 dark screw and 2 brass screws.
Dark screw is 'common.'
Brass screws are 'travelers.'
Screws are color-coded so electricians know where to connect wires



If your switch is a 4-way, it will have 4 screws: Notice switch located in middle of 3-way switches has 4 screws.


If old switch is 4-way, then each time switch is flipped, it will reverse travelers on either side of device.
The same is true with a 3-way switch. Each time switch is flipped, the travelers are reversed.
So a 4-way switch can be used as a 3-way switch, so old switch might be 4-way switch substituted for 3-way.

The key is testing wires in your box.
You have two switches that control same light. Switch1 and switch2.
Switch1 is still installed. Move switch1 to DOWN position.
You are replacing switch2 and have unknown wires at that location.
Switch1 is DOWN position.
Separate wires for testing.
Turn power ON.
Test each wire against each other wire and against metal box to find Hot wire with power. Mark this wire.
Move switch 1 to UP position, and test wires again to find Hot wire.
If same wire is Hot each time, then that wire connects to dark-colored screw.
If different wire is Hot each time, then these are the travelers and these wires connect to brass colored screws in either order. The final wire connects to dark screw.

Now if you have additional wire, that could be wire going to next receptacle.
Leave this wire disconnected and check nearby boxes for power.
If this is a power wire that advance power to next receptacle, it probably connects to dark screw.
Again, you should test, and use process of elimination until each wire is identified.

You have a combo light switch and GFCI.

It sounds like you are 1 wire short.
Where is the wire that goes to the light?
The black wire should be Hot, the white wire could be the Neutral or the could be the wire going to light.
The Black hot wire connects to dark-colored or brass screw on one side of device. This screw should be labeled Line.
You need a white Neutral line that connects on silver-colored screw that is located opposite where black wire connected.

The switch controls a light ... but you need another wire going to the switch.

Add a comment. Post a photo on Imgur.com and add that to your comment.

If I understand correctly, your stove plugs into the wall.
Your stove plug looks similar to one shown



Review wires inside wall.
There are 2 hot wires which are red and black
There is 1 neutral wire which is white
And there is a bare ground wire

Connect wires so they match image above.
2 hot wires, black and red go across from each other
White neutral connects to flat prong on top
Bare ground connects to round prong on bottom
Older wiring might not have both white and ground ... if you do not have both, then connect the wire you have to the flat prong on top

OK .. for this to work, you would need to confirm that the power cable is also in this wall box. So in that wall box you need the existing power cable, the existing light cable, and a new light cable. All the cables being 2 wire with ground. Then just jumper the black power wire top the new switch, and connect the new light , black wire to the switch, the whites will all be together ..
If there is only one cable in this wall box , then the power is run to some other box and you need a neutral for the new light. That may mean rewiring the power tyop get it to the wall box, or rewing the new light to get power from it.

Please Vote !!

Correct, assuming red and black are connected to the breakers in the breaker panel, and white is connected to the neutral/ground buss bar in the breaker panel.

the two black wires spliced are Live wires ( same value as RED) the other single black is the return. The two twisted blacks from the wall go into ther active hole of the new switch and the single into the return. No third wire for earth is needed

Both wires should be black because the switch interrupts or breaks the connection to the light. It doesn't matter which black wire goes where. Just be sure the power is OFF and then undo the dimmer switch (usually has wire nuts connecting the black leads) and then connect the wires to the new toggle switch.

Turn on the power and feel good about your work!