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Date:         Mon, 25 Dec 2006 18:00:48 +0000
Reply-To:     Dave Vickery <davevickery@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dave Vickery <davevickery@HOTMAIL.COM>
Subject:      shur power 1315 wiring question
In-Reply-To:  <86476e250612242249j5596e7aag2c4764edaa02a544@mail.gmail.com>
Content-Type: text/plain; format=flowed

I installed a shurpower 1315 isolator. It is so simple, I don't know how I messed it up.

I hooked up main battery + to one terminal, Aux batter + to the other terminal. I left the 3 little switch prongs alone, as I don't need it manually switchable, just want it to intelligently charge the aux battery.

After a few days, my aux battery was dead and I realized something wasn't working. I checked voltage at the terminal from the main battery, about 12.5 not running, around 14 running. A little hard to get it exact on a 50 volt scale analog meter. Only 5 volts at the other terminal, running or not. I realized the main and aux battery + wires were connected to the wrong terminals, so I reversed them. Same result immediately after. I would have expected to see 13+ volts going into the dead battery. Is that right?

There isn't a ground terminal on the isolator, so I just put a small screw into it screwing into the battery box metal and thought that would be sufficient.

Could reversing the terminals hurt the isolator? Should I be getting charging level voltage when the battery you are charging into is dead?

Thanks for anyone's help.

Dave in Denver Electrically challenged

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