This installation is for N-Scale Atlas GP9 uses TCS CN-GP decoder and was performed by TCS.
The CN-GP is a wonderful fit for the GP9. Simply follow the directions in the the Classic N installation guide and enjoy your reclaimed locomotive!
With a CN-GP installed
After installing the CN-GP with TCS exclusive auto-adjusting BEMF in the GP9 we enjoyed extremely slow speeds, and surprisingly realistic motor control.