Connecting doorbel wires to transformer

[polo]

I have a class 2 transformer with 2 black wires and 1 green. Off of the house , I have 2 red wires and 2 white. I don't have any instructions of which wires are which. Does anyone know?

[KSever]

Here's a drawing that was posted in the Illustrations section. You might want to check out the link here to the Illustrations yourself.

http://www.homerepairforum.com/forum/showthread.php?t=1862