2000 Pontiac Sunfire probably Theft System

Hello there,

I was to "re-arrange" wires behind the CD player (aftermarket) and unfortunately the red one (ACC?) And the yellow one (15A Battery) got in touch.
Result. I can not start the engine any more.
When the key is in the ignition position it only lights the Theft System and the amber one from the engine. When I release the key to the running position all lights are on again and turn off afterward.
The Theft System in not flashing like most people say.

thank you.