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From the General Electric Sealed Beam catalog PAR 46 5 3/4 inch diameter "Trapzoidal/keystone pattern. They will light 3 rows of crops on each side of the tractor and throw light farther ahead." #4019 6.2 volt 30 Watt 1200 CP 300 hour
#4419 12.8 volt 35 Watt 1600 CP 300 hour Rectangular 80 deg x 20 deg flood (smaller pattern than above) Broad flat flood for headlighting or floodlighting towed implements and accessory equipment. #4013 6.4 volt 25 Watt 880 CP 300 hour
#4413 12.8 volt 35 Watt 1100 CP 300 hour From the patterns in the catalogs, I'd choose the 4019 or 4419. A pair of 4019s work well on my 6 volt, three brush generator 2N. Remember that a 6 volt 35 Watt bulb takes 6 amps. Two of them 12 amps. Your three brush, one wire generator is rated at 11 amps and some can be adjusted for an amp or two above that. If you are going to be doing a lot of night operation, set your generator up to carry the lights BUT DO NOT FORGET to set it down for daytime use or you will boil your battery dry. Verrry un-good! If your generator is the 20 amp, three wire, with three terminal regulator, forget the current worry and put a third light on the rear for seeing what you are stirring around in. These bulbs won't burn holes in a mountain but are sufficient for 2 mph tractoring in the weeds. Happy night time tractoring. Elvy
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