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AC 200 - voltage regulator - "Where to buy?"
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rickannable View Drop Down
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Joined: 12 Sep 2014
Location: Chesterton
Points: 20 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rickannable Quote  Post ReplyReply Direct Link To This Post Topic: AC 200 - voltage regulator - "Where to buy?"
    Posted: 12 Sep 2025 at 9:09pm
Hello folks,

Looking for any suggestions on where to buy a replacement voltage regulator for my AC200. I've tested the alternator by jumping the battery post to the F terminal and got full charge out of the alternator, so I'm pretty sure my non-charging issue is the VR.

There are quite a few places to buy a factory-type replacement. I also thought I saw a post somewhere saying that "solid-state" replacements are a better idea.

Any thoughts on whether you would go with a factory-type.... and where you would buy from?

Thank you in advance!
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TedN View Drop Down
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Joined: 30 Apr 2025
Location: Central WA
Points: 104 		Post Options Post Options   Thanks (0) Thanks(0)   Quote TedN Quote  Post ReplyReply Direct Link To This Post Posted: 12 Sep 2025 at 9:43pm
I replaced the regulator on my 190XT two years ago with a solid state one from Amazon, about $30. It had a Transpo label, seems to work so far. I don't know if you can find an original (non solid state) regulator anymore.

Ted
190XTD seriesIII, 190XTD seriesI, maroon belly 7000, 190XTD series??? project(or maybe parts)
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JoeM(GA) View Drop Down
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Joined: 12 Sep 2009
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Points: 4846 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeM(GA) Quote  Post ReplyReply Direct Link To This Post Posted: 12 Sep 2025 at 11:23pm
Talk with Steve at B and B, he sells this one - 
Allis Express North Georgia
41 WC,48 UC Cane,7-G's,
Ford 345C TLB
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dkattau View Drop Down
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Joined: 20 Mar 2011
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Points: 304 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dkattau Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 2025 at 5:41am
AGCO has them. Just got one for our 190XT.
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PaulB View Drop Down
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Joined: 12 Sep 2009
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Points: 5162 		Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 2025 at 6:29am
I have a couple NOS old style voltage regulators left for the DELCO alternators.
If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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rickannable View Drop Down
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Joined: 12 Sep 2014
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Points: 20 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rickannable Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 2025 at 9:33pm
Thanks guys,

I ordered one from B and B as well as a new pigtail. I was impressed with their WD45 wiring harness that I bought years ago, so I went with them.

Thank you all for your thoughts!
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