I have a strange fault on my Mazda MX3 - When I turn the headlamps to full beam my dash display goes out, if that aint bad enough, when I turn my front fogs on they are very dim and my rear tail lights also go out. As soon as I switch them off my my tail lights are fine again..
I thought it was an earthing problem so I checked both earthing blocks on the inner bays and that was ok..
It seems to be that not enough power is getting to the fogs for some reason..I have also tried a test lamp of the live terminal on fog and to a good earth that was also very dimly lit..
Any clues ??? As im Stumped