When we installed the 2010 GT3RS steering wheel in the project 997TT, we couldn’t get the horn working.  I couldn’t even activate the horn via durametrics to test the horn, so we knew something was off.  After a ton of research, we finally figured out that the electronic control module for the steering column also needed to be changed due to installing a later steering wheel in an earlier 997.  Nobody had the answer, so it took awhile to figure …

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