Have reposted as I did not put the car details in the Title.
I took it for it's MOT and it failed on the rear foglights not working. The switch pulled out to the first stop for the front fogs but would not stay out on the second which switches the rear fogs. I took it all apart and found that it is not supposed to stay out and has a spring to prevent this. The rear light does not come on even when the switch is right out, neither does the tell-tale light in the dash. I am baffled, is there a relay somewhere? Has anyone else had this problem?
Added later; It is an E36 with M44 engine