Thanks guys for all the info
bperrybap
To me it sounds easier to use your library and then in the sketch use the nodisplay() display() and same with backlight
I could have a motion sensor on say pin 1 then when the sensor puts out 3v to the pin I could have the backlight and the display come on
Does that sound reasonable
I should ask
I was planning on having the LCD fed using about 25 feet of Cat5 from the Arduino