Thanks for the responses - I just spent a bunch of $ getting a new kicker motor, so I'm not excited about spending on a new alternator but I need the batteries in good shape - planning to start hitting the ocean and don't need any problems. 
 
Spare - did you find the trouble shooting chart for the regulator?  I do have the Merc factory shop manual but haven't had time to dig into it.  About what is a reasonable cost for a kit, if I need to go that way and can I buy it from you and get it drop shipped to me on the left coast?
		 
		
		
		
		
		
		
			
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				 Scott, Portland, OR '85 V-20 I/O, Merc 170
			  
		
		
		
		
		
	
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