Quote: Originally Posted by
scsirob 
Try it on a piece of scrap board, I'm quite sure that leaving an input pin at Hi-Z (tri-state) will give you unpredictable results.
Hence my original suggestion of a pull down on the ignition line. I would be most surprised if the device has internal pulldowns, most don't.
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6yr old first install died 20/8/2005 as result of bad bios flash.
New system : 6x5x2" contains 1GHz C3 PCM9373, ISR based PSU, 512Mb flash DOM, 8Gb CF HDD, 98Lite, DirectShow based frontend.
GPS : Rikaline 6010.
Display : LTM08C351 + LVDS receiver.