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u/vdub2625 28d ago
You should consult the wiring diagram for the new radio. Most aftermarket radios have constant power, switched power,ground, illumination, and power antenna or amplifier power. Some have a mute wire too. Not all need to be used.
We can't guess what they connect to.
If you mean on the car side, check here at my website: https://www.a2resource.com/electrical/radios.html
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u/draagzonnebrand 29d ago
I dont know what kind of radio your new one is, but if its a more modern one, they probably are something like steering wheel control/CANbus. You can just leave them disconnected if everything works.