How do you connect up a cup brake pressure limiter?

[Andrew Cooke]

I've got it in my hand, I'm starting from scratch with no pipes.

There are in and out arrows engraved on the side, so that should be self explanitory. There's an in and out with M10 threads, and an in and out with M12 threads.

LF will be joined to RR, but through the M10 or M12 ports?

thanks
Andy