Hello carlb28. I checked the wiring diagram I posted on another topic. Not that you need confirmation, but the rear cabin lighting is on a independent circuit from the front cabin and yes, the taxi package has a switch from the drivers position to control the rear cabin lighting.
Here is the URL to the 2014 Transit Connect Body Builders Guide. It contains all the body specifications and wiring diagrams. I have found the 2010 guide very helpfull over the past years when adding non-Ford accessories, tracing wiring and making modifications. https://www.fleet.ford.com/truckbbas/topics/2014/2014_Transit_Connect_v1-0.pdf