brake lights stopped working

2001 BUICK CENTURY
196,000 MILES
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My brake lights (as well as rear turn lights) stopped working 2 days ago. I checked the fuses (all okay) replaced the bulbs (all burned out) and the defective stoplight switch. The center brake light now functions correctly, however the tail lights still do not function (brakes or turn signals). Where should I look next?
Jan 31, 2013 at 6:50 PM
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DOCFIXIT
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Suspect faulty turn signal switch
May 21, 2021 at 3:26 PM
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JDL
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Did you check for voltage, anywhere? Your lower brake lites are wired through the m ultifunction switch. The stop and turn use the same bulb filament at the rear, just not at the same time. At the right side rear, Dark green wire is voltage for stop/turn. Black wire is ground.

Check for voltage at tail fuse, head lamp switch turned on.
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May 21, 2021 at 3:26 PM
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JDL
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Hi Doc, didn't see your post. Have a good day.
May 21, 2021 at 3:26 PM