[vincenzo]

Doe's any one knows how the steering weel communicate with the radio 10, is it RF or INFRA RED, because I can't see any annusual plugs at the rear.
I do not think it is by fibre optic , because the only F.optic at the rear of the radio is going to the CD changer,

 

[Lynn]

It operates over copper wire via the CANBUS. There is probably a slip ring in the steer...

It operates over copper wire via the CANBUS. There is probably a slip ring in the steering wheel assembly.

 

[vincenzo]

CANBUS

Thanks again Lynn,
This did cross my mind but normaly CANBUS signals operate over twisted pair cable , but i do not see any twisted wires at the rear of the radio.
are they connected somwhere before the radio harness?

 

[Lynn]

I don't know how or where it is connected....

I don't know how or where it is connected.