so i still got the buzzing/humming sound

[siggieman30]

i mentioned a while ago that i had a buzzing sound coming through my stereo speakers when the headlights are turned on. i found out that it is probably a bad earth. Ok that's lovely but where on earth do i start to look for said problem?
One thing is for sure here, i thought i would be able to just deal with it but now that the days are getting shorter and i need the lights on more it is starting to bug the hell out of me.

[barlidge]

As a test just connect up a piece of wire from the browns's to the neg terminal of the battery to see if it cures the problem.