IGNITION SWITCH WIRING DIAGRAM 2007 IMPALA - Fixya The blower motor does not turn off even with the ignition off on my 2005 chevy impala. I have tried pulling all the fuses and it still is running. If you can take the key out and the fan still blows air then that is a serious problem. the only way that can happen is if a relay or switch melted and stuck on or some wires in the wiring harness melted together. 2007 Chevrolet Impala Electrical System: Ignition Problems The contact owns a 2007 Chevrolet Impala. The contact stated that while driving at approximately 45 mph, the ignition switch independently moved from on to acc mode. In addition, the ignition key fractured in half and the remaining part of the key remained in the ignition. Impala Main and Dashboard Wiring Harness, Body Control Module Click to view on Bing13:37Impala dashboard install of: - main chassis wire harness junction blocks - grounding straps - dashboard instruments and controls - body control module 2005 I..Author: K-Train GarageViews: 11K 2007 Chevrolet Impala Car Radio Wiring Color Codes 2007 Chevrolet Impala Car Radio Wiring Color Codes. Car Radio Battery Constant 12v+ Wire: Red/White Car Radio Accessory Switched 12v+ Wire: Run a primary wire from the back of your radio to your steering column and use the brown wire in the ignition switch harness.