Hi i have just bought a eonon d2208 stereo double din. it comes with a set of steering control cables. They are labelled

- GND-ground
- AD1 - ?
- Invalid
- AD2 - ?
- +5V -power?

Would anybody no how to wire these up to the steering controls? or push me in the right direction as i have not a clue and havent had time to pull the old stereo out yet.
i am hoping i can get them working with the stereo which is this -
http://cgi.ebay.co.uk/D2208-7-Car-DV...item230cd47224

it comes with a nice diagram of parts and you can see the cables in pic just after the dimensions picture.
thanks Jay