By connecting the ground wire from the Legacy base to the input ground side of the TIU did I damage my TIU?
After realizing that I had connected it incorrectly, I corrected it. Now with the Legacy base on the DCS engines don't respond properly, I push the horn or bell button and the "Engine Not On Track" message comes up momentarily on the readout. With the Legacy base off the DCS engines operate fine with no error messages.
Larry