you will get a harness with the new radio. And then you connect that to the old wiring.
Speaker wires, Power, Ground, Ignition (switched power), camera feed, GPS antenna typically.
Its pretty easy. Any car audio store can install in an hour.
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2002 Newmar Mountain Aire Limited 4370 w/ Spartan K2 and Cummins 500hp
ASE Master Certified (a long.....time ago...)
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