three way dimmer switch wiring diagram download how to wire a 3 way switch diagram inspirational leviton wiring originalstylophone page 5 217 just another wordpress site wiring diagram for 2 way dimmer switch save wiring diagram for span class news dt jun 25 2019 span nbsp 0183 32 i m trying to install a ge ez smart jasco in wall dimmer switch to replace a dumb dimmer this is a 3 way installation and i can t make heads or tails out of the existing wiring the existing dimmer has three wires red black and red with white stripes if you are replacing an existing 3 way switch when replacing an existing 3 way switch take note of how the existing switch is wired before you remove the wiring then refer to your notes to help you wire the new 3 way dimmer switch many manufacturers are now producing dimmer switches that can be used for either single pole or 3 way switches