Hi. I dont have a civic, I have a 94 caravan (i know its funny, but its my first car and i got it for free) and iv been looking at this site and you guys help alot of people so i though maybe you guys could help me. anyways im planning on putting two 12 inch subs in a plexi glass box into my van and i wanna get sound activated neons. My question is, how are they sound activated? Do they pulse from vibrations or do you hook them up to your head unit and they pulse off of that? If you connect them to the head unit, Do you connect them to the auxilary ports? Thank you in advance to anyone who helps.