![Metra Electronics GMOS-04 Axxess Radio OnStar Retention Interface](http://janetkrawec.myshopify.com/cdn/shop/products/GMOS-04_512x.jpg?v=1528731198)
Metra Electronics GMOS-04 Axxess Radio OnStar Retention Interface
Metra Electronics
Provides Accessory. High Level Speaker Input Retains Retained Accessory Power. USB Updatable Used In Amplified Systems. Retains Balance And Fade Re...
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