My '02 Tahoe LT does not have a trans temp gauge. I was looking at Digital Dash Solutions on ebay and was looking at their new clusters for my truck. In the description it says if your present cluster doesn't have the trans temp gauge you can put in the new cluster and the trans temp gauge will work, that the "above mentioned trucks" (which include my Tahoe) are pre-wired from the factory for this feature. Does that mean that just plugging the harness into the cluster will make the trans temp gauge work? Thanks!