I have tried the radio, the sunroof, and just about every other turn-key accessory and I still have to re-plug it for anything to happen other than flashing lights! I can completely unplug the add-a-circuit and it has the same effect. It can power from the OBDII port, it just won't activate to display until I remove power and reapply it while the car is running.
But I did notice that after I get it working, if I turn off the car it stays on for about 15-30 seconds, and if I restart the car in that time period it works perfectly.
