There are nine different Spartan chassis types in the 2001 model year (!) and based on what I found researching these vehicles there is no quick-connect port for a brake controller. This just means you will have to hardwire the controller.
Since the RV already has a wired 7-way, you will need just the controller itself, and I suggest the Prodigy P2 # 90885, along with installation kit # 5506.
The controller has 4 wires - red, black, white and blue - and these are: brake light switch... view full answer...