Air: If you can PM me with an email address I can send you some pics. Essentially the kit is 2 spotlights hung either side of the helicopter on the lower tube just behind the rear skid tubes. These have to be wired straight to the battery so they have independent power. The CAA kit also needs 2 activation switches put on the CB panel, marked with some very expensive luminous tape.
The whole kit fitted costs around US 3000 and you lose about 2-3 kts airspeed. It would be great if the light mountings could be hinged so the lights could be folded up for daytime use - but the CAA won't allow that.
And we still can't to CAT flights in the dark in the UK, single engine. And that applies to both fixed and rotary.
The kit works for both 22 and 44. Years ago the approved night kit was based on 2 flares - so we've moved on. A bit.