Sorry guys, this has probably been asked before, but I've searched and can't find it. I have a 24' trailer with interior lights. The power is thru the 7-pin connector. Can I park my Tundra, turn off the engine, lock the door and still be able to draw power to run the interior lights on the trailer for a short amount of time? I've tried it several different times, and it only seems to work while my truck is running (and that won't work for me). Any ideas, Tundra masters?