94 geo prizm no lowbeams headlights no working

my 1994 geo prizm has had a problem with the headlights no working but the highbeams do, almost a year ago i had the local mechanic fix it but last night after i was leaving someones house they started going on and off at random times until they went for good for about a half hour. so i stopped and flipped the switch off and on a few times with no result but i was delivering pizzas so i had to get going so i was driving back to the store with my hazards on and sometime while i was driving they came back on. when i got to the store i checked the fuses and tugged the wires going straight to the bulbs and the lights still worked so now im just trying to figure out wut i can do to make sure it doesnt happen again, thanks!
From the description you gave you may want to check the headlamp relay.

im a newbie, where would i look for that?
Assuming that you don't have two low beam headlamps burned out; My 'gut' instinct would be the dimmer switch(top pic) that is causing your grief, but you will have to access the switch at the time it is acting up to verify. If it tests good, then testing the headlamp switch (lower pic) would be next.
 

SW Washington The relay is located in the fuse/relay block under the hood. I have also attached the headlight wiring diagrams for you also.
 

Sorry Steve; Your posts weren't showing yet when I posted.