I have finally obtained the correct ICS code for my 166!
I tried contacting Alfa main dealers but they said my car was not on the UK register as it was probably an imoport (I had purchased it second hand without a code card). The dealer claimed to have sent the serial number to Siemens/Becker but did not get a response.
The code was not written on the ICS unit itself as is sometimes the case.
The ICS unit was then sent to someone who could supposedly extract the code electronically. After 4 weeks he gave up.
I then sent the Becker serial number (written on the side of the ICS unit) to www.radio-code.co.uk
. They sent me an e-mail within 24 hours with the correct code.
You cannot imagine how happy I am as it has taken me 6 months to get the code.