I have a 2000 V70, and just bought a new amp and 12" sub and enclosure for the back. I was looking at the back of the 813 HU and it has a sub out jack. do you connect the amp to that via the right kind of plug/adapter, or should I connect in to a certain set of speaker wires? I was going to install the amp in the back by the spare tire or where the stock cd changer is. I was planning on running power line in from the battery, so that part isn't tough, it is hooking it up to the hu. If I hook up to the speaker wire, then I need a cross over adapter if I understand it right.<br>I just did this in my 92 GMC Safari van and it was a piece of cake with a Pioneer hu with sub line out RCA plugs, but not so lucky here.<p>Thanks for your help!! I am planning on doing this on thurs if I can.