Buying a Former Rental Class C. How many of us out there?

I asked the guy about the tow wiring harness and the salesman told me that there is no +12 or brake wire installed. This tells me it's just a drop wire off the tail lights. I also have no standard 4 or 7 pin connector on the 28A, just the box with spring terminals for wiring up lights. I'll be fishing a pair of wires from the battery and I'll install the brake controller myself.