Rear Brake Light wiring diagram

dstsuggs

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Buick Ownership
11 Lacrosse CXS , 10 Enclave CXL
My rear passenger brake light just stopped working, all other lights in the housing work. Other than “brake”.

This housing does not have bulbs, has an LED curcuit board i assume. Which led me to check power at the wiring. And sure enough there is loss of power in the power line to the brake positive. So im trying to trace the line to see if there is an unknown connection location im unable to see.
 
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