be2210 becker user manual

[superhik]

Hi!

I've googled for user manual for becker be2210, or any other similar becker and found nothing.

Do you know any useful links?

What interests me is how can I make use of blue cable that ends with round plug and goes from the back of my radio. I suppose it's connection for aux, but not sure how to connect it, so any help would be appreciated.

Thank a lot