How many factory amps in 2007 Mountaineer?

[GVSS]

I have a 2007 Mountaineer with factory nav and subwoofer (audiophile) stereo.

Does anyone know how many factory amps are installed with this type of stereo? I know there is one for the sub, but is there one for the door speakers?

I'm planning on installing an amp to power the front door speakers and a sub, and I want to run the speaker wires for the front door speakers from the amp to the harness behind the dash and use the factory speaker wires that run into the doors. I want to make sure there isn't a factory amp that I might fry by doing this.

Also, does anyone know where I might be able to find a factory wiring diagram so I know what the color codes are and what wires to tap into.

Thanks for the info!

GVSS

 

[jrford]

your '07 should be a lot like my '04.
Radio has its own amp for the doors.
Sub is the only external amp; i also found that unless the stock sub amp was connected the radio didn't put out any bass notes. . .in other words it turned the sub signal off without the amp.

 

[GVSS]

Thanks for the info!