There is a lot of confusion on the 'net with this topic..glad I found this forum.
I have two - 3 way switches on either side of my garage. To hook up a radio, I need to run a long extention cord...i hate doing that.
If I understand what everyone has been saying...the red wire is the flippy/floppy wire that allows 3 ways to work but the black/white wire stays the same.
Would it work if I pull out the wires out of the far switch..put them into a connection box...use all three colours to run to a new light stitch in a new box and feed just the black/white to a new two outlet unit. Not sure what I would ue for ground ...
If you only have three wires in the switch box then you CAN NOT install a receptacle. There is no neutral wire in the box.
Your assumptions about the wire colours are not correct. Any of the colours could be used for any part of the circuit.
Do not PM with questions that can be asked in a forum. I will not respond.