Argh. No don't do that. I talked to a local shop and then called Crutchfield and found out the local guys had no clue what they were talking about. Anyways, you can't just use an adapter. Too much voltage will go to the amps and burn them out. Call Crutchfield and talk to them. They can sell you a harness that can lower the amount of voltage going to the amps so you won't burn them out.