vctrvrgs

I was driving home at nite,when in a second my headlamps turn themself off,i did try high beams ,nothing happen,lites inside were ok,i did push the hazars signal switch,after a few second the headlamps were on again,it was a very scary situation,since the vehicles on the oposite side of the road were unable to see me on the dark.Had anyone experience this condition and how do you fix it.