[Farmall46]

There is a box in front of the shifter, with a knob , it has a yellow sticker with the letters L H D B , You can spin the knob to select a letter,.......????? The tractor its on is a 1942 farmall A .Thanks for the help

 

[SonnyT]

Low charge/ High Charge/ Dim/ Bright.:trink40:
You should really invest in a Owners Manual and all this is explained.:fing32:

 

[Farmall46]

I need to get a manual