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I will be using a relay circuit from my key ignition accesory on position that will momentarily connect the two remote wires for a 1/2 second or so when the car gets turned on. That relay will also turn on the car adapter that plugs into the laptop.
I am using an application called 'hibermon' created by a guy on here that puts the computer into shutdown, standby, hubernate etc (whicever you chose) upon losing the power connection(or after a set time) . For a laptop, it will detect when it looses AC power. So for however long you set it to wait, 10 seconds, 30 seconds, etc, it will run off its battery until it sends its standby command to the computer (for example). The time delay allows for any instance where you turn the car off and lose power but would turn the car back on in a few seconds or what not. Using the laptop with this circuitry and software I have created a fairly intelligent startup shutdown controller wannabe (and tank setup using the laptop battery) for little to no cost.
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