Incandescent start switch (pull switch, Bosch) suitable for Case IH 1046, 1246, 353 383 423 433 433SA, 453.523, 533 553 , 554 624 633 644 654.724, 733, 740 743, 744, 745, 745s, 824.833, 844, 844S, 946 application 12V 50 amp 24V 27 amp switching position: preheating, starting (Schaltknauf hold) blade terminals 15.. , 19, 50 a mounting hole: 10.5mm Without shift knob. Ref 0343008008 shift knob and other incandescent start switch available on request!