Focus MK2 map lights. Only one side working.

[Paddy94]

Hye guys.

Just did the little map light upgrade for my focus, swapping out the standard single unit for one with map lights. But I've ran into a bit of a problem, Only one of the map lights seems to be working. The passenger side works fine, as does the center light, But the driver side map light won't work. I've swapped the bulbs around and still no driver side light. 

Any idea what this could be? Faulty unit maybe?

This is the unit I've bought and fitted.

 

[Stoney871]

I'd check the corresponding switch.

Sent from my SM-G930F

[Paddy94]

Well, I went back out and tried to figure it out, but still no joy. I cleaned all the connection points and checked everything ands all I got was the light came on for a single, glorious split second, then then went off again  after that, no matter what I tried, I couldn't get it to come to life again. I think I've just about gave up on it. Surely it must be the unit itself then? Hopely I can get ahold of another to see.