Mar 11 basic doorbell system wiring shown.
Front and rear doorbell wiring.
Send your partner to the doorbell to hold the button.
Loosen the screw terminals and disconnect the wires.
For instance if you re wiring a doorbell to your front door flip off the switch that controls power there.
Use tape to label these wires accordingly so you can remember which is which.
A doorbell transformer is an electrical component that literally transforms power from a higher.
Follow the same procedure for the rear button and screw too.
Usually the chime unit has screw terminals that are labeled front rear and trans which indicate the front doorbell wire rear doorbell wire if you have one and transformer wire respectively.
Try turning on lights in the area to make sure the power is shut off.
For instructional purposes i ve mounted all the doorbell devices to a.
If there is voltage out there check the chime of the doorbell.
Wiring for two doors is the same as for one with the transformer hardwired to the 120 volt source from a house circuit.
There are many styles to choose from providing you with the opportunity to add decorative flair beside your front door.
Many doorbell units make two sounds.
Using the majority of wiring information for a double chime and single doorbell button.
Terminals on the bell unit are marked front back and trans for transformer.
The color of the wire doesn t matter.
The rear terminal is where the rear doorbell push button if you have one connects to the chime.
Meanwhile check for the voltage between the front screw and the common terminal.
Locate the doorbell transformer in the outlet box near the door.
Wiring diagram for a two chime doorbell.
The rear is only a 1 note chime.
One for the front door the other for the back door.
Adding a second doorbell chime.
Add a rear side or garage entry door button in addition to the main front entry door button.
Connect the input wires on the transformer to the source circuit using the black to black white to white and ground to green method.
Typically doorbell chimes have three terminals labeled rear trans and front that correspond with each connection.
If you have hardwired doorbell buttons at the front and back of your house and one of them works you can be sure that the non working button or the wiring connected to it is bad.
You can change out the button itself with a new doorbell button.
This video shows you how to wire a front and rear doorbell circuit using 18 2 awg wire.
A spool of 18 gauge wire is available at hardware stores and home centers.
Located on the central hub of a doorbell chime the doorbell terminals are where the wires from the doorbell push button s and transformer connect to the chime.
