I have an 02 A6 C5 does any one know how i find out what radio i have  as in is it a standard unit  a 1/2 amplified or fully amped it is a Audi Symphony on the rear it has ariel , electric arial wire  , and 3  ,I S O  type plugs that look like power at the bottom , part of the speakers  and the top one i would say has the other speaker wires plus extra wires  , i want to fit a Parrot hands free system but finding the right S O T  lead is becoming a pain in the rear end

Here's a couple of YouTube videos that might help. 

 

Its half amped the rear , i have a wiring loom SOT to ISO with a box to cut the rear amp cost £70.80 , now the cd is showing no disc err 3 , should have taken the discs out first i suppose

the only problem now is i have this great bundle of wires the parrot box and the box with the kit and nowere to put it all