PAC RP4.2-BM21 RadioPro4 BM21Radio replacement for select BMW(R) vehicles Retains SWC, amp & navigation outputs Data controlled 10A accessory output Removes SOS error light from cluster after factory radio is removed Data controlled outputs for connecting an aftermarket navigation radio Single programmable 12V output Easily configurable using a PC application Highly visible tricolor LEDs keep the user informed of the module's status Retains factory amp (non fiber optic) Retains
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