Front Trans Rear Doorbell Wiring

Many doorbell units make two sounds.

Front trans rear doorbell wiring.

The color of the wire doesn t matter. Loosen the screw terminals and disconnect the wires. You should see at least three wire connectors labeled trans transistor front front door and rear rear side door. Wiring for two doors is the same as for one with the transformer hardwired to the 120 volt source from a house circuit.

Try turning on lights in the area to make sure the power is shut off. A doorbell transformer is an electrical component that literally transforms power from a higher. Adding a second doorbell chime. Typically doorbell chimes have three terminals labeled rear trans and front that correspond with each connection.

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. 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. The wire from the rear door push button goes to terminal 1 marked rear on the doorbell. Locate the doorbell transformer in the outlet box near the door.

The rear terminal is where the rear doorbell push button if you have one connects to the chime. 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. Run wire from the other sides of the push buttons. The two black wires are attached to the trans transformer terminal on the doorbell unit and to the front or front doorbell terminal.

The twisted pair of white wires are from the 1 other terminal of the transformer and 2 from the second terminal of the doorbell button. The wire from the front door push button goes to terminal 2 marked front ignore the terminal marked trans. Wiring diagram for a two chime doorbell. 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 spool of 18 gauge wire is available at hardware stores and home centers. Terminals on the bell unit are marked front back and trans for transformer. 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. Connect the input wires on the transformer to the source circuit using the black to black white to white and ground to green method.

One for the front door the other for the back door.