Remove the jack. You don't need it with the e-unit gone. Follow the ERR instructions. One wire to each brush and one to the field. Also add the capacitors between the brushes and motor ground. Power to the board from the center rollers, ground to a lug on a brushplate screw. I've converted 4 Pullmor locomotives this way and they've all worked flawlessly when wired this way/according to the ERR instructions.
