Handsfree kit in a 03' Focus

[ChrisRS]

Hi

I have the 6000 CD player in my 03' Focus 2.0 Zetec, i've just inherited a Nokia hands frre kit which i've started fitting, does anyone know where the best place to connect the following connections to:

Mute

Ignition (Thinking stereo but don't know which is the correct wire.)

Chassis (Nearest Earth.)

Battery (Doing this via an inline fuse but don't want to go right back to the battery.)

Any advice is much appreciated.

ChrisRS