Hank, Not being familiar with the battery. Is there no where on the external part of the battery that would have a hot connection when it shuts off. Also, Alternators that have marginal diodes can leak to ground causing current drain. John Hervey www.specialTauto.com << I'd like to install an small, auxiliary 12 volt battery to keep the radio powered when the main battery cuts out. A system with a relay will most likely not work, since any momentary loss of power causes the radio to reset itself. Is there a way to wire a second battery to the radio that will power the radio, but not also feed whatever is draining the charge of the main battery? >>