Noticed this on a website and did a quick search- no matches. Has anyone looked at this product or have it installed in thier 80? I'm looking at a dual batt system. How much have others spent on doing thier installations? Looks promising, but kind of pricey. Taken from: http://www.4by4connection.com/tjmibsdubasy.html A versatile unit suitable for many applications, but highly reccomended when you wish to connect 2 batteries in parallel to double the reserve capacity for high current draw applications such as: Electric Winches, Jump Starting, 240V Converters, and running many electrical accessories. Generally used with "STARTER" type batteries the IBS System requires heavy duty battery cables connecting both batteries via the solenoid. Features: Cabin Mounted Control Unit L.E.D. display of Charging Voltage L.E.D. display of Main Battery Voltage L.E.D. display of Auxiliary Battery Voltage Manual override switch to activate solenoid when batteries are required in parallel Swiss made quality and technology The TJM IBS Management System uses state-of-the-art voltage sensing electronics to control a heavy duty solenoid that links batteries for charging and discharging when the engine is running, but automatically isolates the batteries when the engine is stopped.