96 W210 rebuilt blower motor, blows like a fiend, no air from vents
 

Okay, so I noticed one of the brushes was totally wasted, took apart the motor (even though it's pressed together, I used a screwdriver to pry it open, replaced brushes then used a chisel to bend tabs back over), and now it works amazingly.. BUT now there is no air coming from registers. Did I jar something loose, is it a vacuum issue or electrical? Air did come from the vents prior, just not very often since the motor didn't work that well. Found a post about the vacuum block, but how do I differentiate between that and the actuators? Last question.. how do the plugs from the VB come off?
Thanks, Matt

Possibly running backwards?

Thought of that and pulled it back out to check.. and it really throws out the air, so don't think that's it.. great minds.. I may pull out the VCB and see if anything looks amiss.

Fixed!
 

Okay mbdoc... you were right! Before I got into pulling the VCB, I thought, wtheck, so I reversed polarity, and sure enough, registers work! I'm sure someone could tell me how I reversed the polarity of the motor, but the important thing is, it all works now. The upside is now all the filters are replaced.