An update for owners of newer vehicles-no red LED. Rather the window that shows what gear you are in simply says "Mode". I almost called Allison for a new shifter control panel. Also I dislike the placement of the shifter control panel. At the present time I have to take my eyes off the road to find the mode switch. Perhaps with more miles it will become second nature.
2015 Entegra Anthem 450HP-1250ft lbs of torque
2015 Jeep Grand Cherokee
Roadmaster Falcon 2 All Terrain
SMI Air Force 1