Front rack suggestions

It's an edelux, after posting I was googling around to see how to fit a light and lo and behold discovered that indeed, the rack comes with a light bracket.

I got a shop to fit the rack and they'd said they'd had a devil of a time trying to work out how to mount my light. (in the end they mounted it sideways with a fork mount bracket) I guess they didn't read the instructions that came with the rack.

Anyway, they at least didn't throw away the widget and I just found it in the bag of spares they gave me so I'll mount it myself, hopefully I've got enough slack in the cable.