As I am new to the vehicle which is a 1998 Volante and no owners manual came with and I am to find not available in the U.S. or U.K. reliance is now on your input to educate me. There is a 3 position toggle switch at the front of the console that reads S N 1, second behind the lighter is a switch with a half moon and second with a II sign. What is the function of each of the three? Thanks in advance-Colin