i replaced my old jvc with a kenwood and noticed that when i turn off the engine to listen to music or when im listening to music in "ACC" mode and turn the ignition to "on" to roll up/down windows (not starting), the deck sometimes powers down and then right back up (with no loss of memory or settings). i found it does this about 1/3 of the time when i switch the ignition between acc and on over and over and over again. other than that the deck acts normal in all ignition positions and has never cut out on me over any bumps or loud volumes or anything.
i regrounded to chasis, visually checked fuses but will change the underdash acc fuse now just in case.
any other suggestions or insights are welcome and appreciated as im going back in there again today.