I would check all fuses, both in the vehicle and under the hood. As far as disconnecting the battery to remove a fuse, it isn't necessary.
While you were working with the radio, were you pulling on any of the wires under the dash? Check under the dash to see if any body grounds are loose or damaged.
Let me know what you find.
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Tuesday, November 14th, 2017 AT 9:42 AM