I have a smart wall switch that I want to install and it has 4 wires which are load, live, gnd-green, and Nuetral-white connections.
My dimmer has not markings on the connections but has 2 black wires connecting to 2 blacks in the box and a gnd (green). This is not a 3 way but I found a red unused wire in the box, Of course one of the blacks is the load the other is hot. Could the red wire be the needed white wire and is miss colored?
Any help is appreciated.