I just installed a Retrosound stereo in my 72 RR. All is good. Fit and sounds real nice (thanks to Jerry Landes in Texas for his 4×10 front adapter)! My question is I have been in the habit of always disconnecting my battery terminal when car is idle for days or weeks (or when I work on anything electrical). I do this to lessen any chance of fire on this old girl. How do I do this and still keep my settings on stereo? Do those "memory savers" work or are they only good for a couple hours? Any advice would be great. Thanks.