Mopar dies when key is released

You got a two day old thread here. Don't know if you're askin about this elsewhere, but you have time wrapped online. Not bein a smartass.....but turn the computer off. Get the test light and go find the problem. I could find the break in power in 15 minutes or less. 1982 truck. That's like stones and bearskins. You should try a pinout diagnosis on a 2012 BMW. Two things. It aint gonna fix itself and it's gonna take you some time depending on your skills. We caint fix it over the internet. I wish it was that easy but it aint and even if it was, you wouldn't learn anything.