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			James does this help?  Place one of the ohm meter leads on the single connector on the Trio (Touch the other lead to each of the other three connectors, one at a time. The meter needle should either show continuity or no continuity, but should be the same for each of the three connectors. Now reverse the ohm meter leads and do the test again. The meter reading should now be reverse of the reading achieved on the first test (if the needle “pegged” on the first test, it should do nothing with the leads reversed)
			
				
			
		 
		
		
		
			
		
		
		
		
		
			
		
		
		
		
		
	
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