Check the listing for details. RTA MOST Audio Adapter for Various BMW Models (E-Series) 003.346-0. Condition: New. Listed at 490.17 USD. Adapter weird needed if Harman/Kardon or Logic 7 is installed as the sound system in a BMW vehicle from the E series, and fiber optic cables are available. Without this adapter, the audio signals cannot be tapped. Please use the eBay checkout process. All necessary information and payment options are displayed in this process. You will also receive an order confirmation separately by email. There you will also find all the relevant information about your purchase. If you have any problems with this, just give us a call! We will inform you as soon as we have received your payment and we have handed over your goods to DHL. You will also receive the tracking number in a separate email directly from DHL. The ARS24 team can be reached by phone or email from Monday to Friday from 10 a.m. to 4 p.