Great idea, now applied. Might be use for someone - it's a grey cable (second pin) you looking for and it's still has 12-14V. Thanks Tooks!You’d need to find a suitable earth point and then tap into a lighting wire, there’s an illuminated switch in the centre console on the e-Golf if I remember correctly, the auto hold switch?
I presume the box is a small transformer/driver for the LEDs? I don’t know how many amps that will draw, but you need to be aware of that before splicing with the switch wiring. I’d be inclined to add a fuse as well to isolate the car as much as possible from a fault condition in that LED set.