i need a code for my radio cassette?

ive just bought a suzuki baleno s reg with no radio, but ive been given a blaupunkt lyon rcm 106p and on the label at the back is....T2186416 also pw 538 961 and 7 646 426 515, and bp 6426 121 86416. its got a cassette player and looks a bit old. please could anyone help me to get it going,thanks in anticipation, dave