Kevin, at the risk of sounding flippant, the "usual way to electrically control the quarterlight windows" on the Lancia was to press the ruddy electric switch !   However, to be a bit more helpful, I remember that there was a very small servo motor on each window, resembling a slightly more bulky set-up than the Leyland Sherpa manual versions found in Bristols.  They worked well. 
		
		
		
		
		
		
		
	
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