Originally Posted by Bluepill
Also. if the sound system is a dashboard-style unit with a removable faceplate, I found that it can turn itself on when I connect/disconnect the battery. It drains the battery in about a week. I remove the faceplate and store it in a small Tupperware dish. That way it doesn't turn itself on.
Not "can" turn itself on, but "WILL" turn itself on. Took some reading of the Kenwood manuals, but the stereo has 2 power lines (positive wires) for use in a car. One goes through the ignition switch, and the other bypasses the ignition so it retains memory settings while the car is turned off. Forest River wires both power wires to a 12V positive wire (no switch). The result is the stereo "sees" any change in the 12V as the ignition switch being turned on. My stereo will also turn itself on when you hook up shore power (voltage jumps from 12.6 on full battery to 13.7 from converter).
My fix is to install a switch for both stereo power lines (yellow and red wires) and accept the stereo losing its presets. If I wire the yellow past the switch, it will behave like it does in a car, retaining the presets at the cost of some parasitic drain on the battery.
Regardless of how you wire the stereo, disconnecting the battery (and no shore power) wipes the stereo memory and also eliminates any parasitic drains.
FWIW, the purple and purple/black wires (right rear speaker) were totally disconnected from the factory. Outside speaker is only getting left channel signal.
hope this helps
2014 Rockwood A122 A-frame
2008 Hyundai Entourage minivan