Yes- each SiriusXM radio needs its own subscription - be sure to ask for a family subscription plan that can offer a discount for multiple radios on your account. As for other attachments, that would depend on how you will interface the Onyx plus audio into your vehicle - if by Aux audio input, a 3.5mm audio cable is included already. if you need to connect via FM, you may want to consider purchasing the FMDA25 FM antenna adapter along with any special antenna connectors you may need for your particular vehicle.
2 years, 11 months ago
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