Trailer Wiring Connection Points for a 2010 Cadillac CTS Wagon  

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The correct wiring for a 2010 Cadillac CTS is the Tow Ready Custom Fit Vehicle Wiring, # 46255. The connection points for this harness are located behind each of the tail light assemblies. In a sedan, you would pull back the trunk lining to gain access to the back of the tail lights. But on a wagon, either the tail light assemblies will need to be removed or there may be an access panel in the cargo area that needs to be taken off in order to reach the connection points.

I have included a link to the installation instructions and a video showing a typical installation for you to view.

expert reply by: Michael H

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