i swapped out my wifes radio for a pioneer and now the alarm keeps going off, it does it late at night and my neighbors are going crazy so im having to leave the battery unhooked, anyone have any idea what i can do??? i have the owners manual but no good info is in it to help me. i have the security code for the radio but i cant do anything without the stock radio in there i dont think. please help!

i checked the sensor for the alarm that goes along with the hood, i put a used carbon fiber hood i got on the car last week, and since then its been doing this. hopefully it solved the problem