i just got bought one of these dv710 dvd units (the ripspeed one) now i havent even taken it out of the box im tempted to fit it but how many amps can you connect to it as i have to running a 12inch sub and a set of rear speakers!! and i dont wanna lose them lol any help people and do you just need to connect the handbrake cable thing to an earth so it thinks its constantly parked so i can run it even though im driving?? any help here would be great