2004 200 DI? 
i will have to check tomorow at work to see if those has the rec/reg built in the emm or if its stand alone.  but as i recall omc made a battery isolator like the blue sea. word of advice if the rec/reg is in the emm there are expensive to replace.
		 
		
		
		
		
		
		
		
		
	
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