I'm fitting a PMC loom to my J and figuring out switch wiring. There is a difference in the lighting circuit and I seem to have an extra multi block at the battery box which is confusing me a bit. I'm wondering what plugs in here on the US model? Is it some sort of secondary fuse box or? I'm thinking I can just bypass it but wanted to check what it's actually for.

Basically the wires from the main fuse box end here rather than at the front switches as per the J and obviously show up as a different colour at the front. Also anyone have a wiring diagram showing the R wiring like this?
Cheers
Lee