During an ice storm and no electrical service, I wandered into the super-dark garage and noticed both engine bay LED's and the turn signal repeaters on the mirrors were faintly glowing. No manner of re-closing doors or engine cover nor starting it or repositioning dome light switches made any difference. The car had not been driven for two weeks. It's always on a battery tender, so no problem. I don't know how the lights electrically interconnect since the tail lights were off. In any event, if others have this, it may explain a possible reason why the batteries tend to go flat in short order. I'll investigate and I find the cause, I'll post results.