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About 3 years ago I was given a GSL SBI-100A 12v dual battery isolator which I couldn't use because I had a 24 volt Diesel MQ, so now I have a 2.8 GQ and I would like to install it but I cant find a circuit diagram for it have searched on the net to no avail. Does anyone have a circuit or can tell me how to connect it would be greatly appreciated.