Shark fin

[Polo1971gti]

I have got a shark fin areal what leads do I need to run it my Vw head unit

Head unit is dab nav and radio

So I'm guessing the 3plugs on the shark fin run each of the those


New to the site how do I add pic

[Bigtam]

I fitted a shark fin to my GT Blue when I had it and to be honest it was more bother than it was worth most of the plastic trim rear of the car has to come out to lower the roof lining.