Hmm... The dash switch won't be the culprit. It just supplies electrons to the hi/lo beam switch and doesn't know whether they are going to the hi or lo beams. Look at the filaments- are the low beam filaments broken? If so, it could be that you've got alternator/regulator troubles that caused a voltage spike. Kinda unlikely that both bulbs would fry at once, though I suppose it could happen. If the bulbs are good I'd look at the hi/lo beam switch. You can trouble shoot that with a voltmeter. With the headlights on, the wire coming from the headlight switch will be hot and show 12 volts regardless of switch position. Check for 12 volts on the high and low beam positions, if you don't get 12 volts on the low beam wire the switch is toast. New ones are usually in stock at Napa.<br><br>Hope this helps...