Intermit Wipers

[BBBurban at aol.com]

Hi all for some reason my intermittent setting on my wipers isn't working.  
The other functions such as slow, fast, and the down for blip work fine.  Is 
there a box somewhere in the dash that I should check (not looking forward to 
yanking steering wheel and combo switches so want to check other things first 
if it is easy to).  Any help would be appreciated as always.  
TIA

Hank 90q20v