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This is the TP wiring harness connected to the stock harness. Two FM antenna adapters are needed because the BMW uses a funky antenna connector that I’ve never seen before and the TP uses a VW/Audi connector. The first adapter takes the funky BMW connector to a universal connector and the second adapter takes the universal connector to the VW/Audi connector. It may be possible to find one adapter that goes directly from the BMW connector to the VW/Audi connector.