Thanks Christian, I think that cable its just off, but I'll take a look. Looks like a problem is not in that cable! I've been taking out my radio for many times to connect rightly sound speakers through subwoofer...
As I have understood from u I just have to isolated that blue cable or making it unplugged and thats all... if it will be isolated or unplugged taht means I have problem in my gearbox.....
Thanks Christy for advice!