It's funny, my radio just went out on my '83 240D too. Must be that time of year.

This was really helpful in finding the fuse, but now I don't know if it's blown or not. Should I be able to tell? This thing looks ancient and is filled with sand. It says T2/250D on it with a blue line on one side and a green line on the other.

Also, where on earth could I actually find a replacement for this? I googled the numbers you entered and nothing substantial really came up. An is it possible to use a different fuse that I can pick up from a local auto store?

Thanks for the help