Mach 460 questions

Don't know if the 99 Mach 460 is the same as the 94-98, though it should be similar. The amp under the storage bin is NOT the same, the Mach 460 has an additional connector. Basically, here's how the Mach 460 modifies the Premium Sound system:

The existing speaker wiring now plugs into the tweeters in the Mach 460. There's an extra wiring harness that plugs into the Mach 460 amp, that runs down the driver's side and plugs into the rear speaker tray.

There should be an extra speaker plug taped up inside each door, farther back on the wire for the existing speakers. If this wire is not there, you do NOT had the Premium Sound System, and you'll have to add some of your own wiring to get it to work.

I had a website that detailed a Mach 460 installation, but I can't find it.