Is there an Aux input on the S class radio? If so then the $150 units would work perfect. As they have an Aux output along with the ability to transmit via FM!

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....