Technical radio panel diagram

[karcie]

Hello, I have a problem with my Grande Punto, suddenly the radio panel backlight stopped working, I would like to receive a wiring diagram or something like that.

 

[GrandePunto PL]

LCD and back-light is an internal problem. Service manuals for the car (eLearn) will not cover it.
Look (Google) for specific radio model (not the car) or similar one (same "family", "line" of products).
Is it Blaupunkt?
Which one?

 

[karcie]

LCD and back-light is an internal problem. Service manuals for the car (eLearn) will not cover it.
Look (Google) for specific radio model (not the car) or similar one (same "family", "line" of products).
Is it Blaupunkt?
Which one?

I think if the radio numbers are 7 646 329 316 this diagram will fit
i have blaupunkt radio
this one