Sooner, or later, I will have to clean my battery posts. Or replace said battery. I am a little paranoid about this once simple operation. Reading here, about lost radio codes, and who knows what else, has me concerned. Is there a "safe" procedure, to unhook battery. 1996 Riv.

Also. I cant seem to find an ordinary Haynes type, service manual for this thing. Any hints on where to look?

the worst thing that could happen is that you lose your presets and your bass/treble levels, and your time. Write them down beforehand, and you'll be set!