Looking Good Installing A Dimmer Switch With Two Black Wires

Separate the black wires and cap them with wire nuts.

Installing a dimmer switch with two black wires. White is the neutral or return wire and should go to the white wire in the wall. Use a voltmeter to check which wire in the wall has voltage if you are unsure. You will find a red and black wire connected to the switch.

When installing your dimmer remember electricity flows into it on one side and out on the other side. The green wire simply goes to. Turn off power and connect the corresponding wires from the junction box with the insteon wall switch an cap them with wire nuts.

If there is bare wire exposed unscrew the wire connector remove the wires trim the ends of the wires with a wire cutter and then re cap the wires. One of those black wires should be white. Next set up the three way dimmer switch wiring.

If your dimmer has two black wires the orientation doesn t matter. But one of the wires may be white if your house is wired with plastic sheathed cable. See lights and switches although there was none there we have added a red indicator to the black wire.

Notice the black wire is the only wire that we are controlling through the 2 way switch. Install insteon wall switch attach the wall plate and turn on power. Finish with wire caps.

Then turn off the main power from the circuit breaker. Gently pull the switch to expose the wires. We bought an already built house and want to install a dimmer switch for the four lr ceiling can lights.