Here's the wiring diagram, although my original problem is fixed (bad ground cable), thanks to the help from people on this forum. The tractor runs fine now, but I want to post this wiring diagram because I am not sure the battery is charging correctly.
A couple of explanatory notes regarding the diagram. I only have two gauges on the tractor: 1. Amp gauge, 2. Water temperature gauge. There is no oil pressure gauge, nor does there appear to be a cut out in the dash for one. Per the manual, the water temp gauge should be an oil pressure gauge. The amp gauge either doesn't work or the alternator isn't working. The wiring from the alternator looks a little odd. There is the single post, but there is also a two-prong clip, which has a single wire coming out and that is spliced into the wiring going from the post to the "off" position of the key ignition.
Let me know if anything here looks awry. I am also not sure if the component I labeled "resistor" is really a resistor or something else. Thanks for your help.
http://img.photobucket.com/albums/v635/rubinsteinak/51TO-30Wiring.jpg
A couple of explanatory notes regarding the diagram. I only have two gauges on the tractor: 1. Amp gauge, 2. Water temperature gauge. There is no oil pressure gauge, nor does there appear to be a cut out in the dash for one. Per the manual, the water temp gauge should be an oil pressure gauge. The amp gauge either doesn't work or the alternator isn't working. The wiring from the alternator looks a little odd. There is the single post, but there is also a two-prong clip, which has a single wire coming out and that is spliced into the wiring going from the post to the "off" position of the key ignition.
Let me know if anything here looks awry. I am also not sure if the component I labeled "resistor" is really a resistor or something else. Thanks for your help.
http://img.photobucket.com/albums/v635/rubinsteinak/51TO-30Wiring.jpg