[header] How to install a doorbell [title] Cut off power from the breaker or fuse box to avoid injury. [step] Make sure that the circuits that supply electricity to the power sources you are working with are shut off before starting the installation. Turn off the appropriate switches at your breaker panel or fuse box. 
[substeps] Test light switches or other outlets in the area to make sure the power is off. [title] Connect doorbell wires to the chimes.