On my 77 Rabbit, the EGR light was controlled by a box that the
speedo/odo cable went through. There was a white plastic button on one side
of the box. You pressed this in a good 2 cm using a pencil or pen
or somesuch and it reset the box. Maybe the one on the bread-loaf is 
similar?

 
	Bill Abbott
	
	VWs: 70 Single Cab Pickup, 93 Corrado
	Cats: Moustache and Georgi Zhukov
	Best Fish Recipe: Pan Blackened Catfish
	Favorite Flannel Pattern: McNab (natch!)
					
     /\_/\      
    //o o\\   
   <<==Y==>>   "growing whiskers and a tail!" 
   mm,\C/,mm