Need your advice here, electrical geniuses... Mrs Mollygrubber's '09 650 keeps blowing headlight bulbs, both high and low beams, but the little front running light is still OK. She says her digital display intermittently goes blank too, when she stops in traffic (?). I'm not that electrically savvy, I can add lights and run wiring etc., but the vagaries of CANBUS systems is a little beyond me. Are these issues related, or a computer issue, or is it more likely a simple short? I haven't torn into it yet, didn't have the heart after just dropping multiple thousands on her car . Any pre-emptive advice appreciated, thanks!