Ford e250 Rear Blower Not Working?

I own a 2000 Ford e250 Starcraft Conversion Van, and the rear blower control doesn't work (AC or heat) But the front blowers work just fine.

When the rear blowers turn on, nothing happens at all. Could it be a fuse or the motor itself?

That motor is part of the conversion package & not from Ford, so can't tell how it is wired. You'll have to have a pro open it up & take a look.