Right people bit of a strange one here.

The Mrs and I own a mk2 1.6 16v petrol focus on a 2010.

The nsf headlight bulb won't work. I've replaced the bulb,check the fuses.

I've plugged the nsf headlight into the osf and the head light works. Ive found the live feed to the headlight. As soon as i plug the headlight back in the live feed/wire turns to a earth??

I'm thinking is the body computer at fault.??

 

I got the headlight working but I had to take a feed off the osf headlight and used it as a trigger wire for a relay which I put in to power the headlight.

 

likely a broken wire somewhere

 

Yeh im thinking that now. I might have a proper look sometime when I've got a spare few hours.