NO!!! I installed these initially, and it doesn't hurt to install them, but if you don't install them, the system will play audio through your car's speakers, and use your OEM mics for bluetooth calls and voice commands.
- by Robert Ramsay
Do I need to use the microphone or speaker that's included?
- by Robert Ramsay
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Do the units come with preamp RCA line-outs for hooking up aftermarket amps?
How do I setup the SIM card for 4G Data?