Project going well, and we're now wiring it up.
Below photos show where we're connecting the red (12V) power, blue (into headlight loom to dim DRL), black (earth) and yellow (into acc/ignition).
I'm not saying the way we've done it is the best - but it seems to work (so far!) and is just one option (especially how we've done the headlight (blue) input).
This is how we've wired things up in the main fuse box (we used a male connector as another forum member suggested to jam into the slot with the two green wires).
This is where we installed the relay:
This is the pass side headlight loom we're using for the blue wire to dim the DRLs -
we WERE going to use the violet/green Pin 3, but discovered it's probably the
wrong one. After another test this morning, we're going to use Pin 10 (anybody that's already done this agree/disagree?)...
As I said, it's just one way of doing it, not necessarily the most 'OEM' way!