Did you test the pump prior to installing it? I'd suggest removing the pump and see if it works, or maybe just pull the gas line upstream of the mechanical pump and see if it will fill a catch can when you push the button. Permanent magnet motors reverse direction with a polarity change- - - -ones with field coil windings don't.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!