1999 Concord (Power windows)

The power windows for the two rear doors do not work.  On a rare occasion they will roll down and up.  However, 99% of the time they do nothing.  It appears as though they are drawing current though.  When the interior lights are on and the window button is pressed everything dims.
 
I took one of the doors and window motors appart it all looks like brand new.  No gunk or anything.  Do you guys know how to further troubleshoot this?
 
Thanks.

need some motors.