I have a garage which already has vinyl siding on it but the inside is unfinished and accessible. I would like to add an exterior wall lantern.
The vinyl mounting block I purchased looks like this and it is entirely hollow inside (does not contain any sort of structure behind what you see).
The light fixture I've purchased is just a standard wall lantern with a round base similar to this:
I would like help understanding which electrical junction box is needed behind this and how it should be installed. In order for the light to have any structure holding it up, I believe the junction box will need to be extend past the siding to the front surface of the mounting block. Is this correct? How do I approach this setup?