Headlights

2001 tacoma. all of a sudden and for no known reason neither of my 2 dim headlights will work. high beam still working. when I put lights on high beam the high beam light indicator on the instrument panel does not come on.
fuses under hook ok.
Thought it must be relay switch and not headlight switch on steering column.

thanks for your consideration and assistance

 

i have the same problem. how did you solve it. neither of my lights will come on, i can flash, its all it will do. no lo or hi.