Sometimes a bulb burning out blows the fuse. So, one possibility is that one is burned out and so is the fuse. Fuse locations and functions are documented in the OM.

 

Try working the high beam switch on and off repeatedly, and bang on the top of the steering column.

The switch went bad on my 2000EX, and I used contact cleaner which worked for a while.

 

Sometimes when one low beam goes out it isn't noticed until both fail. Just like brakelights or taillights. Not noticed until both fail.
There are two relays for the headlight, one for the right and one for the left and not for high or low beam.
However, both low beams are grounded through the dimmer switch so if new bulbs don't correct the low bean problem, than the dimmer switch would be suspect.
Remember, unless you drive in the country or mainly rural roads with little traffic, low beams are on almost all the time, not high beams, so they will burn out sooner.
Buffalo4

 

Two simple things you can do: Measure the voltage at the bulb connector with the lights on. It should be very close to what the alternator is putting out. If the voltage is zero, you know you have a problem in the circuit. Also, pull the bulbs and look at the filament for damage.

 

Well, it was the simplest answer. Both low beam bulbs burned out at exactly the same time. I know they both worked 48 hours before as the vehicle had a DMV inspection. Happy it was not the steering wheel stalk.

 

Thanks for posting back with the solution.
Buffalo4

 

Thats pretty awesome on the mean time to failure.
😀