Bmw Head Unit Why Does My Aftermarket Alpine Head Unit In My BMW X3 Only Work When The Head-lights Are On?

Why does my aftermarket alpine head unit in my BMW x3 only work when the head-lights are on? - bmw head unit

I will be an Alpine IDA-X200 installed on a 06 X3 and supplied with electricity only when one of the parking lights or headlights are on auto light will work at night but not during the day, also wanted to know if mounting a subwoofer and amps the battery can be damaged, and the manufacturer's warranty