This installation is for N-Scale Atlas GP7 uses TCS CN-GP decoder and was performed by TCS.
The CN-GP is a perfect fit for the Atlas N scale GP7. Simply follow the directions in the the Classic N installation guide and enjoy your classic N locomotive! No modifications are needed to the frame or the light tubes! The surface mount LED's are very bright and make realistic headlights.
After installing the CN-GP with TCS exclusive auto-adjusting BEMF in the GP7 the locomotive performed very well, especially at very slow speeds.