Ford Bendix radio schematic

[tn97ahs]

Hi everybody!
I’m searching for a schematic for the radio in a Crestline Victoria -52. It’s a Bendix model M-4. I’m not afraid to pay for it. The radio is absolutely dead and when it comes alive its useless in Sweden anyway! We have only FM! So what’s the plan? I’m going to build in a 3,5mm input connection and use my mobile or mp3. I think it’s a easy mod and it don’t destroy the radio. Maybe I can fix it without schematic but it will be much easier to identify valves and components.
Have a nice weekend!
Anders
Sweden