hey mate,
I get heaps of these for mates, and if you get a consult connector which led doesnt light up, sometimes they're wired up internally wrong, theres 2 wires they sometimes swap over (no idea why). Its the blue and purple wire (probably 1 and 2), theyre next to each other on the other connector, if you open it up (2 screws) you'll see what i mean.
If not your confident, you can send it to me and ill fix for you, if you pay postage. Up to you, takes 2 mins to fix