Your're hotwire (power cable) may not be hooked right or completely. You may have a bad fuse or a loose one.
A car that shuts off when the turn signal is used indicates a major short in the electrical system. When the turn signal is used, it cause a massive draw on the power and shuts it down.
the ACC wire from the stereo is connected to constant power (+12V)
your ground wire for the stereo is connected to the ignition wire of the car
it is still running off the battery, most of the time it will turn off when you open the door
well that means that your car just BLOWS
it provides a signal to your subwoofer amplifier to turn it on and off with the car's key
My car starts but it shuts off it says ck engine
when the sterring wheel is turned sharply to park, the engine shuts off
P.CONT is a turn-on lead wire for your external amps if you have them. All it does is sends a signal to your amp (if you have one) to turn on/turn off
souns like a misfiring.
Fuse. Also did you have it on full blast? That might do it.
Its broken.