For instructional purposes i ve mounted all the doorbell devices to a.
Front and rear doorbell wiring.
Many doorbell units make two sounds.
Try turning on lights in the area to make sure the power is shut off.
Locate the doorbell transformer in the outlet box near the door.
Using the majority of wiring information for a double chime and single doorbell button.
Wiring diagram for a two chime doorbell.
The rear terminal is where the rear doorbell push button if you have one connects to the chime.
Add a rear side or garage entry door button in addition to the main front entry door button.
Typically doorbell chimes have three terminals labeled rear trans and front that correspond with each connection.
One for the front door the other for the back door.
Push buttons wired to the doorbell s front terminal play two notes and push buttons wired to the terminals marked rear play a single note.
Here s how to track the culprit and make the fix.
Wiring for two doors is the same as for one with the transformer hardwired to the 120 volt source from a house circuit.
The button the chime the transformer or the wiring that connects them all.
For instance if you re wiring a doorbell to your front door flip off the switch that controls power there.
Connect the input wires on the transformer to the source circuit using the black to black white to white and ground to green method.
You should see at least three wire connectors labeled trans transistor front front door and rear rear side door.
Inspect the wires for damage.
The rear is only a 1 note chime.
Terminals on the bell unit are marked front back and trans for transformer.
Wired nutone doorbells can provide door signals from two entrances.
Mar 11 basic doorbell system wiring shown.
This video shows you how to wire a front and rear doorbell circuit using 18 2 awg wire.
One wire from the transformer goes to the trans terminal and one wire from each button goes to either the front or back terminals.
A doorbell transformer is an electrical component that literally transforms power from a higher.
Splice in new wire to add length and allow for.
Repair breaks with twist on connectors.
Depending on which doorbell you are replacing will decide if you need to use the front or rear connector but you will need to use the trans connector.