Loran in Lancasters

I understand that Loran was fitted in Lancaster (particularly of the PFF) late in the war, but I’ve been unable to figure out exactly HOW it was installed – in a late war Lanc there was already Gee at the left hand side of the navigator, or alternatively in some late installations mounted into the navigator’s table at the right. The H2S was to the right of the table.

Can anyone help with any reliable information of how it was installed in Lancs? Ideally photographs or diagrams!

Thanks!