Posted by John T on November 29, 2021 at 06:38:45 from (174.246.192.91):
In Reply to: JD 420 S 6v to 12v posted by crsutton81 on November 28, 2021 at 17:04:37:
Your question
Do I need to unhook the old voltage regulator to prevent any parasitic drainage?
ANSWER
YES there's no need for the old VR. I would wire the One Wire alternators output to the LOAD (NOT battery/starter) side of the ammeter, that's where the BAT on the old VR/Cutout wired to, you can remove that wire along with the old VR. The other INPUT side of the ammeter wires to the hot ungrounded battery post often at the big battery cable on the starter switch
IF you wired the alternators output direct to the hot battery cable at the saddle switch input THE AMMETER (if it has one) WOULD NOT READ THE ALTERNATORS OUTPUT even though sure it would still charge the battery
The new 12 Volt Coil wires to the ign switch output NO BALLAST assuming its indeed a full true 12 volt coil. I dont think I would mess with using a 6 volt coil plus a ballast and ballast by pass system as it should start fine in cold weather no problem.
I would use at least 10 Gauge (even 8) from alternator up to ammeter and upgrade the wire from ammeters INPUT to the battery/starter
If its a true One Wire Alternator you DO NOT NEED the excitation circuit but it may or may not start charging until fast enough RPM
Of course assuming the Alternator is NEG ground wire the ignition coil, battery, and ammeter accordingly
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
