IMPORTANT NOTICE: The Ads on this site are GUARANTEED VIRUS FREE, your computer will not get a Virus from our ads.

Author Topic: How do I identify which model of alternator I have?  (Read 2282 times)

exeterjeep

  • Newbie
  • *
  • Posts: 2
  • Karma: +0/-0
    • View Profile
How do I identify which model of alternator I have?
« on: November 02, 2014, 07:21:49 PM »
I have an elderly Willys jeep which had been converted to a 12v alternator prior to my ownership. Looking at pictures, I believe it is a "10si", and if that's the case, then how do I determine the amperage output?
I do know that there is a 30 amp fuse between the B+ terminal and the battery and it has never blown regardless of load and/or rpm. There are NO marks on the unit.

Any ideas?

Ask the Rebuilder

How do I identify which model of alternator I have?
« on: November 02, 2014, 07:21:49 PM »

exeterjeep

  • Newbie
  • *
  • Posts: 2
  • Karma: +0/-0
    • View Profile
Re: How do I identify which model of alternator I have?
« Reply #1 on: November 07, 2014, 03:19:32 PM »
I believe I've found the answer on O'Rileys auto parts.  Most early alternators are about 40 amps, then 63 amps based on application.  My 10si looks as if it's 63 amps--which is WAY more than I ever use.