Does the board in the 02 have the same fet upgrade as the AWD? Does any part of the antennae come in contact with anything on the chassis that is carbon fiber? Is the motor in the 02 the same unit as the AWD? What is the condition of the brushes in the AWD? Armature dirty? Any arcing from the motor when power applied? Any questionable connections in the AWD car? Maybe at the board to chassis connection? All are interference factors for any AM or FM based unit. All are important.
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