Bulb - 12V, 21-5W
CTPA-70928348 Replacement Part to Fit:  Allis-Chalmers For Models: 8745, 8765, 8775, 8785, 9735, 9745, 9755, 9765, 9775, 9785, (8775, 8785 ALL S/N J117019)  Price:  $1.79  Buyers Club Price:  $1.61