Navitas products, customer service & support is incredible. The green controller looks amazing and shows others that this cart is an aftermarket configuration. The TSX 3.0 DC controller creates a performance boost, this packages includes: TSX 3.0 Controller, Harness, Motor, Solenoid, Diode, On the Fly Programmer, & Battery Cable Set. The On-The-Fly Programmer operates via a bluetooth connection, this is a modern configuration, allowing the app to function as a dashboard while driving, and adjusts programming while the cart is stopped. Ths app will allow vehicle owners to remotely lock their vehicle, monitor usage and performance or notify their dealers with diagnostic information.