When I put my foot on the breaks my head lights come on and only the rear left break light comes on, even does this with the ignition off, on a mk4 escort any ideas?

 

single filament bulb in brake bulb holder where a twin filament should be possibly?

 

Bad earth problem

 

as said. single filament. i did it years ago on an orion

 

Nah just brought 2 new double fillament bulbs, I have checked and cleaned all the earths I could find but no difference

 

Bad earth,mk4 disco lights!!!try all the shitty connector pieces as well,they corrode like fuck.
May help to trace it via disconnecting one side of the rear lights then see if the problem comes back,this should help in which circuit maybe causing the issue.

 

faulty lamp? put new earth on to metal on the bulb holder see if it stops it.

 

bad earth mate

 

Just went out and took the connecter off the right hand side one that wasn't working, sprayed it with wd 40 and used some sandpaper on the end of a screwdriver cleaned all the little metal contacts put it back together, works fine now thanks :d

 

No probs mate,it's really common on them.if it keeps happening,you can get some spray electrical grease that should do the trick.