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I have an aerial off a 2017 Skoda Yeti

My 2011 Passat (fitted with the DAB/CD unit) , has the rear window aerial
and the connectors look like this

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I don't need a car phone connection only FM radio and DAB

Anyone give me any guidance as to how this can be connected up?
what goes where.........?

I seem to think that the 12v power is being sent over the FM or AM
line? Do I need a splitter?

Any help most appreciated

Many thanks

Dr B