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where did the replacment radio come from?
if it was Used IT MUST be from the same make and model vehicle vehicle as the electrical architecture is VERY different between car lines on modern chrysler/dodge/jeeps
so if you bought it from a dealer then the radio was likely defective , radios of that year are ordered by VIN number to insure the correct radio is delivered, and just plug and play, this is proven by the "GO NO GO " method you did when you reinstalled the original radio, HOWEVER be aware MOST ALL radios are re-manufactured by chrysler NOT new the only way to get a NEW radio is if the vehicle is unsold