As already said, the RE models require a controller to work. A Moparts member here was designing one. Here's a link to that thread.

https://board.moparts.org/ubbthreads/ubbt...design-one.html

There are two others I am aware of that also are capable of controlling the RE models. Here are links to those two.

http://www.firepunk.com/anteater/

https://www.powertraincontrolsolutions.c...ion_Controller/