I just put a Prodigy in my truck.  For some reason, it is apparently impossible for me to understand how brake controllers work.  When I have the trailer hooked up, what is the digital readout telling me when I hit the brakes?  I tried to follow the instructions for setting the power (old F250 w/ 2H BP) but once I did, at least with the trailer empty, the readout stayed really low when stopping -- granted I wasn't going that fast probably 35 mph.

Thx