I have a 1986 300SDL that the Hi-beam head light on the passenger side quit working, The light in the dash lit up telling me that I had a blown bulb at about the same time the high beam indicator light quit working. So I'm thinking no big deal it's a dual element bulb and hi-beam is burn out. I get a bulb and replace it still no hi-beam. Bad bulb ? I try another still dosen't work. Suggestions to point me in the right direction PLEASE .