Mechanics

WHY DOES MY HEATER AND RADIO NOT WORK. BUT HEATER WILL WHEN RADIO UNPLUGGED??

1997 Pontiac Bonneville • 189,000 miles

Neither my radio now my digital display heater work when I plug the wire harness into my factory radio. If I unplug the radio, the heater works. Any ideas?
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Kevinbentley815
November 4, 2011.



Check to make sure there are no ground issues.