I thought about doing it that way but this way hopefully puts less strain overall on the screen because it doesnt get a surge of voltage while starting the truck. It comes on after the engine is going. I can also monitor the PC shutdown for occasional hibernation issues. If the monitor shut off when I turned the key I wouldn't be able to see if it shutdown properly. It will also work out well when I wire up my ITPS override switch.
Why run the screen through the ITPS?. The cigarette ligher is a switched connection, isn't? so your screen is turn off when you turn off the engine as opposed to the 45 sec ITPS delay and because your screen power button is shorted, it will come on automatically anyway when you turn the engine on, right? Also, you have a bypass switch for the shorted power button for the screen, so if you don't want it to come on, just flip the switch and it won't turn on automatically, right?