Author	[Modern View]
gene zick 08-29-2012 19:31:14 4.245.76.57 Report to Moderator	I have a 1949 TO20 Ferguson tractor. It has been changed from a generator to an Alternator. Does this make it a 12 volt? [Reply]   [No Email]
John T 08-30-2012 04:53:07 216.249.82.117 Report to Moderator	Re: voltage in reply to gene zick, 08-29-2012 19:31:14   Hopefully whatever alternator it is corresponds to the battery voltage and polarity??? If theres no battery as posted below theres a decent chance the alternator is for 12 volts NEGATIVE GROUND as thats the more common, HOWEVER it may be 6 or 12 volts and Pos or Neg ground, we just cant say sitting here..... John T   [Reply]  [No Email]
JMOR 08-29-2012 20:18:44 72.181.173.171 Report to Moderator	Re: voltage in reply to John T, 08-29-2012 19:31:14   Those alternators can even be made Positive ground!   [Reply]  [No Email]
John B. 08-29-2012 20:15:25 38.114.64.185 Report to Moderator	Re: voltage in reply to gene zick, 08-29-2012 19:31:14   Have it tested. Just because an alternator has been installed does not necessarily make it 12 volts. I took a 12 volt alternator and put in a 6 volt regulator. There is no external evidence on the alternator to indicate this. By having it tested at your local parts house will tell right away when it puts out it's regulated voltage. I hope this helps.   [Reply]  [No Email]
oldtanker 08-29-2012 20:07:58 66.228.255.239 Report to Moderator	Re: voltage in reply to gene zick, 08-29-2012 19:31:14   Eay way to find out. Call around to local parts places. Many have a bench tester and can test the alternator which will both tell you voltage and if it's any good. Most places bench test for free. Rick   [Reply]  [No Email]
Owen Aaland 08-29-2012 19:40:07 216.47.32.166 Report to Moderator	Re: voltage in reply to gene zick, 08-29-2012 19:31:14   The 10SI alternator can easily be built to handle 6, 12, or 24 volt, either positive or negative ground.   [Reply]  [No Email]
d beatty 08-29-2012 19:41:01 24.12.128.253 Report to Moderator	Re: voltage in reply to gene zick, 08-29-2012 19:31:14   Does it have a 6 or 12 volt battery in it ? They do make alternators in 6 and 12 volt. What voltage battery you have in it will tell what system you have in it.   [Reply]  [No Email]
Jon Hagen 08-29-2012 19:38:27 69.26.17.61 Report to Moderator	Re: voltage in reply to gene zick, 08-29-2012 19:31:14   Generally yes, but I see Delco SI series, 1 wire alternators converted to 6V in the JC Whitney catalog. You might get a little more info if 6 or 12V from any light bulbs, does it have a 12V coil or has an ignition ballast resistor been installed. The tractor came without a battery I assume ??   [Reply]  [No Email]