The only reliable source for the correct amp bypass (as I've heard the 2000 models were different) is Crutchfield. It's not listed on their web site, but phone order. I think people have been paying about $20 for it. It's nice and long and has the right plugs.
Aaron
Oh, Call 1-888-955-6000, 8 AM to midnight Eastern , or e-mail sales@crutchfield.com.