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12v - (negative, ground) connection that is only when key in "off" ?
I have something that runs on a simple 3 wire setup.
12V + constant - easy
Ground constant - easy
Ground in "OFF" - either gotta find or make!
Am I going to have to wire in a NC relay that gives me a ground when its coile is not powered? Or is there something already in the truck that is only grounded when the ignition is off?
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Linear Mode
