[Farmall] F450 Switch question

[H. Fry]

On some alternator conversions you must put either a diode, an indicator
lamp or some other resistance in the line from the alternator back to the
ignition switch connection (which is also normally connected to the coil).
Otherwise you do not cut off power (from the turning alternator) to the coil
and the tractor continues to run even with the ignition switch turned off.
http://www.farmallcub.com/phpBB2/viewtopic.php?t=13749  this page is a
discussion on the farmall cub website about 12V conversions.  If the link
doesn't come through, just copy and paste it to your browser.
Good Luck
Bald
Southeast Georgia