thanks for all your replies. Yes, power to the device is cut off, but I know about power leakage from sticking a multimeter into a home outlet that has a wall switch cutoff. If I put the multimeter to the lowest voltage setting and stick the probes into the outlet with the wall switch off, I...
does electricity drain from the battery through the 12v electrical plug when the car is off? I live in a harsh environment and sometimes don't drive my 2011 tacoma for a day or so, so can't afford a dead battery, but it would work out nicely for my homemade stereo pre-amp rigging.
Has...