After hooking up a sub and amp to your car it dies when you come to a stop Why is this?

If your car dies when you come to a stop after hooking up a sub and amp, it may be due to an overly demanding audio system that is drawing too much power from the car's electrical system. This can lead to a drop in voltage, especially if the car's alternator or battery is not able to keep up with the increased power demands. Additionally, if the system is not properly fused or wired, it could cause shorts or other electrical issues that affect the vehicle's performance. Checking the power connections, grounding, and ensuring the car's battery and alternator are in good condition could help resolve the issue.