the flasher should be underneath your drivers side dash. But i dont think that that is your problem. If it was, your turn signals would work, they just wouldnt blink (flash) 
 
I think its a wiring problem like richd suggested. When I pulled my dash, i accidentally messed up the plug on the back of the warning lights switch and every now and then it loses connection and my turn signals wont work. I guess that the warning lights are on the same circuit. Try pulling that swith out and messing with the wires.  
 
good luc 
		
	
		
		
		
		
		
		
			
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				NMRA O/C 9516 
NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft
			 
		
		
		
		
		
		
	
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