I have an 06 durango with a 200 amp high output alternator. I put a 200amp battery isolator with exciter under my hood to separate my battery in the back from the car battery. I tested the voltage at the alternator and it is putting 14.8 but then I tested it at the batteries and the isolator and I am getting 13.9-14.0. I am losing almost a volt through the isolator. I need to know what the exciter hookup is for and would this not being hooked up be causing me to lose this voltage? It says to hook this to the ignition, so should I just hook it to an ignition wire?
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200amp battery isolator question