right the plan is to have my alarm put out a 12v switched signal when it is dis-armed to send to the opus to turn-on. then this goes off when i arm the alarm.
however when i'm at car meets the car will be disarmed but i don't want to computer running all the time.
i was already planning on putting a cut-off power switch in the dash for times like servicing when you don't want the PC booting up
if the system is dis-armed (therefore the '12v switched' is live) will this switch work like you guys have on the ignition. i.e. when i flick it to 'on' the opus turns on as normal then when i flick it off it does its hibernate thing?