I have a light switch that I wanted to replace with a timer switch (to control outdoor lights). When I pulled the old light switch out of the wall, there were 4 wires connected to it: Two White Wires connected to the two top screws on each side, and 2 red wires connected to the two bottom screws on each side. What the? I've never seen a light switch with only red and white wires. The new timer switch as a black, red, blue and green wire.
(Also, the old switch also did not have a ground wire connected at the bottom of the switch.)
I JUST realized that the outdoor lights have 2 light switches that control them. (Second question... can I replace one of the switches with a timer switch?)
Help! (Thanks very much!)