I just bought it and I hate blanks. What is the blank used for to the left of the hazard switch? I replaced all the other blanks with USB ports. Posted via the PriusChat mobile app.
Add a 110v AC power inverter next to your 12 battery and then run a switch to turn it on and off in one of the blanks...
I wondered the same thing, though mine is more like a push on/off toggle switch, than it is a blank Having said that pushing it doesn't seem to affect anything, no matter how many times I do it