I have just bought an EZViz DB1 doorbell and wanted to connect to my internal chime and power. I have a Friedland Type 1 NOM-ANCE chime as attached but dont know how to wire up, I looked at the instructions in the DB1 book but it seems to refer to removing wires in chime attached to front and trans but as you can see by picture I have terminals T3 and OF with a brown wire and then a terminal 1 which has two blue wires - anyone got any clue what I undo and attach to the power block within the BD1 Box, and of course does what does the black and white wire connect to? also one last question for clarity I see in the DB1 box it has a fuse, I assume as I am connecting this to chime its not needed, would be nice for that confirmation.