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6v to 12v conversion tractor?
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6v to 12v conversion tractor?
Updates older 6-volt tractors to 12-volt charging system. Sparkies, wires, cap, points and button. I thought converting from 6 volt to 12 volt would Allow tractor to start better in cold weather. Includes: wiring harness, two battery cables, alternator, bracket for alternator, resistor assembly, key switch, gauge, solenoid, coil with gasket, belt and detailed written instructions with wiring diagram. Upgrade to a 12-Volt Electrical System. Change over to 2 12 volt batteries, and get rid of that 2 6 volt krap JD could not seem to get away from. Have you ever thought of the perfect. The Hitachi 14231 was used on Nissan pick-up trucks with a 2 liter engine. Change to a 12v coil or ad a resister to the six volt coil. I purchased the 12 volt conversion kit through "Yesterday's Tractor" and I have some questions. Includes:* 63 amp 1 wire alternator* Mounting brackets* Wire harness* 12 Volt internally…. Reason: 1: Compatibility when jump starting. Check out VintageAutoGa. The R1 relay has its own terminal numbers and is energized when the. Those tractors have run fine on 6 volts for 80 years now. Apr 8, 2022 · Dan and Rachel show every step in the 12 volt conversion process on a Ford 9N tractor with a front mount distributor. Panzerkampfwagens I and II were secretly developed by the Nazis in defiance of the Versailles Treaty. It can be used to replace a 6 volt generator on 1955-1964 tractors and convert them to 12 volt positive ground system. Includes tach drive. Use the information above including the 12 volt conversion kit part number and picture (if available) to assist you in making your decision to purchase. It can be used to replace a 6 volt generator on 1955-1964 tractors and convert them to 12 volt positive ground system. Includes tach drive. Recently bought a 53 Ford Jubilee that already had been converted to 12 Volt. 105 amp alternator is way over kill for the Cub. Because whole life coverage is usually much more expensive than. You will still need the 12 regulator Fit a 12 volt. I've installed the 12 volt conversion kit and the pertronix ignition kit from Yesterday's Tractor. 12 Volt Conversion Kit, Front Mount Distributor 8NE10300ALT-C for sale, 8N, 9N, 2N. Only 12-volt, lead acid, batteries can be recharged by an electrical battery charging device. Having that it is COLD outside; I thought I would ask here before baring it trying to troubleshoot. L stands for "Light" and is "idiot light" connection that excites or jump starts the alternator when the engine is started. The WD45 came out with a 6 volt starter. The problem with the 1 wire alternator is that the engine has to be rev'd high enough initially to excite the fields to charge. Suitable for: Ford 501, 600, 700, 800, 900, 2000 4-cylinder, 4000 4-cylinder gas engines with traditional points/condenser distributors and gear-shift transmissions. Updates older 6-volt tractors to 12-volt charging system. Learn how to avoid jackknifing at HowStuffWorks. For those 12 volt tractors that used a 6 volt coil plus ballast resistor and ballast by pass when cranking circuit, I prefer you keep them in place and use them which can improve cold weather starting tomturkey; Aug 17, 2023; Tractor & Farm Talk; Replies 19 Views 763 JMOR Converting a JD 40S to a 12. Upgrade to a 12-Volt Electrical System. Well-known Member #1. In the real world, it is difficult to invest the time necessary to keep up on all these issues and 12-volt conversion becomes inviting. Just a quick video showing how we did the 6 volt to 12 volt conversion on a Ferguson TO-20. Some of us are just not that funny. Optima Batteries 8010-044 6v Battery Type:AGM Cranking Amps at 0 Degrees F:800 amps Cranking Amps at 32 Degrees F:980 amps Reserve Capacity:110 minutes Length. 8—If you have a 12 volt donor vehicle available, you might be able to do your conversion for low cost. According to TipRanks The sharp decline in India’s rupee earlier this year set off plenty of jitters, as well as a surge in India’s always burbling inflation. If your proofmeter is driven off your generator, this alternator does NOT have tach drive. The kit we used for this was #AKT0015. Product Number: EIGN23999 In Stock. Kubota MX5100. Gives you everything needed to do a pro wiring job. Feb 20, 2022 · I successfully complete a much needed 12 volt conversion with parts laying around the garage Install a 12 volt battery that can fit in the battery box, run the negative to ground and the positive the starter switch/solenoid Replace light bulbs with 12 volt equivalents. can produce up to 17 volts. (Item #: 140527, Ref: C7NN10000C) $115. New electronic ignition is specified for 6volt system. #B9021-010, Complete Alternator Conversion Kit for 1953-1957 4-Cylinder Ford Tractors. Took the lid with me to Rural King, and then to O'reilly Auto Parts. Hey Paul - The diagrams should work fine for your 300. Luckily, tractors have relatively sma. Many models can use our 63 Amp One Wire Alternator with Pulley for converting from 6 volt to 12 volt. Used on tractor with a Distributor only Wires at coil will be reversed from 6 volt …. Shop today! Tractor Sales Okeechobee FL. My 600 is down right now but when it goes in the garage after the massey is done I'm freshening up ignition and losing the resistor and upgrade. If your proofmeter is driven off your generator, this alternator does NOT have tach drive. I did this on my 1949 8N front mount conversion to 12 volts and it worked out great. IH Farmall Tractor: A, AV, B, BN, C, Super A, Super C, 100, 130, 200, 230. You may need new cables to accommodate. Does not contain coil as the ignition system remains at 6 volts. This should give the tractor an easier start up. Converting a 6V Ferguson tractor to 12V (using a 12 V Generator) Secure a 12V generator (Delco models 1100359, 1100362, 1100434, 1100435, 1100529, or 1100998 will fit and you can use the same mounting bracket). The original kit had a resister #IDR6000 in it Inexperienced mechanics and tractor hobbyists sometimes have issues with the conversion. A 12 volt system will give better starting on a tractor which is hard to start. Double the Voltage to 12 Volts and we have 12X12=144/1. A six volt generator won't charge a 12 volt battery. Upgrade to a 12-Volt Electrical System. There are many ways to avoid jackknifing. (6 volt replacement) this starter motor is a replacement for the original 6 volt starter motors where the tractor has been converted to 12 volts. I decided to change the switch to a 12 volt switch from a 400 diesel instead of switching the low beam terminal to the high beam terminal. OK for a vehicle with a "buzz-buzz" engine, but not. Apr 7, 2018 · 5. Get the conversation started by crowdsourcing their post-graduation financial story. Learn more about Panzerkampfwagens I and II. I want to avoid buying 6v batteries just for this, so I want to put a 12v negative ground battery in. I would want to be a buyer of TSCO, but the question is where and what to riskTSCO Tractor Supply (TSCO) is the go-to destination for all things' lawn and garden A stator can be found inside the alternator system inside your lawn tractor and is easily recognized by its shape and appearance. The conversion kit typically includes a new alternator, voltage. Well-known Member. buy a 12 volt coil with internal resister from NAPA. The real issue is battery power. Kit includes: alternator, brackets, hardware, belt, wiring harness, instructions. Tips and ideas on doing a 6 volt to 12 volt conversion on an antique Ford Tractor. rockland county ems Tractor Supply Company (NASDAQ:TSCO) is likely to register increases in the top and bottom lines when it reports second-quarter 2022 results. Also don't need to mess with the voltage regulators that came with the 6 volt system. 12 Volt Alternator Conversion Kit, Farmall H, Super H, 300, 350. The Hitachi 14231 was used on Nissan pick-up trucks with a 2 liter engine. the way i understand it is that 2-6volt 800 cca batteries wired in series will give you 1600 cca,2-12 volt 1000 cca batteries wired parallel will give you 1000. To bring some new life into your chat, don’t ask them what they do for. Nov 8, 2017 · Much of this 6 to 12 v conversion that so many vintage vehicle owners want is just alot of "much to do about nothing". A single Group 31 has more cranking amps rating as two 3EEs in parallel 800. Thanks for all the replies. The generator systems will all work equally well with the battery hooked up positive or negative ground. Simple to wire, there are thousands of wiring diagrams and how to's on the web. 50-year old wiring is usually cracked and would need replacing anyway. L stands for "Light" and is "idiot light" connection that excites or jump starts the alternator when the engine is started. Locate store hours, directions, address and phone number for the Tractor Supply Company store in Okeechobee, FL. They can produce way more amps than a generator. wikfeetx The problem is that there are about 6 different ways to convert the tractor to 12v, all of them work, and an infinite number of ways to do it wrong. One option is to have a auto electric shop rework your existing 6 volt generator to 12 volts, then install a suitable 12 volt regulator. I could not find another battery to fit it on the outermost lip like the Group 1 fits. Thanks for all the replies. The chevy and the Ford use the same charge circuit. Most people leave the starter at 6 volts when they convert the rest of the tractor to 12 volts purely because of the cost. Kit includes: Alternator, Resistor, Wiring Harness, Nuts & Bolts, and Brackets. Can I just attach the 2X 1-Ohm, 10W resistors between the posts. I have made the new bracket and just about have everything ready to go. The scales have tipped in virtual conversations vs face-to-face: employees have 8 conversations in person a day compared to 9 through messaging platforms. Mine runs a resistor to the 6v ignition coil and points. In order to convert a Farmall Cub tractor from 6-volt to 12-volt, several components are needed. the 6 volt generator will not put out much more than 8 volts max. I would pick up a single wire Delco clone in the 60 amp range. Over 90% of all original 6 volt starters work fine for many years after a 12 volt conversionK Sean in PA) 1973 Ford 4000 3-cyl gas w/S-O-S & 60 inch Woods rotary mower; 2008 John Deere X500; 2015 John Deere X530; 2014 Kubota BX25D w/50" snow blower Took it out Saturday and put it on, and tractor started up better than any time since we got it in 1968. m4 closed today The Generator can also be used as a 12 volt generator on 1955-1965 4 cylinder tractors. S stands for "sense". Sure 12 volt systems are an improvement over the earlier 6 volt system but in no way are necessary for all tractors. Want to Convert Your 6V Ford, GM, or Chrysler to a 12V System? Check Out This Article for Tips and Instructions or Call 972-240-6851 for Technical Support. Order Toll Free (800) 853-2651Mon-Fri 7am-7pm CTOrder onlineanytime! Allis Chalmers D14 Electronic Ignition Conversion Kit, 12 Volt Negative Ground for sale, 1142. L stands for "Light" and is "idiot light" connection that excites or jump starts the alternator when the engine is started. I've heard an auto electrician can convert a 6 volt generator to 12 volts but have no idea of the cost or whether it is economically feasible. Kit includes rebuilt unicharge alternator with pulley and self exciting regulator, resistor, 12 Volt coil, wiring harness, top alternator bracket, alternator. Probably just needs attention to the points. I have replaced the 6 volt system on all my tractors with a Delco 12 volt alternator. The 2 6 volt Jd batteries are shot (got a whole two years out of them) and we have decided to buy two twelve volt batteries and get some new cables made up. 28 FREE delivery Jul 9 - 10 Or fastest delivery Jul 8 - 9 Small Business #B9021-003, 6-Volt Positive Ground to 12-Volt Negative Ground Conversion Kits for Early Ford Tractors Converts from 6-volt to 12-volt Negative Ground with Alternator For use with Early Ford Tractors with Front-Mount Distributors Only (behind the fan blade) Alternator is mounted on the Right side of the tractor from sitting in the seat. You could use a direct 12 volt coil such as NAPA IC14SB without the resistor. Forget the words 100 ohm resistor. The same setup will explode the battery. Also search the archives for lots of info Apr 27, 2015 · This rough 1956 International 300 Utility model was purchased in the Baldur, Manitoba Canada district in 2014. AI will be part of CONVERSION CONFERENCE 2023 to unleash it power and optimize the complete customer journey for small business owners. Step by step instructions for converting from 6 volt to 12 volt. Fixing a hydraulic leak might be as simple as tightening a hose fitting.
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For 9N, 2N, (early 8N 1948-1951) with Front Mount Distributor (distributor is right behind radiator), to serial number 263843. the tractor must have a 12 volt alternator/generator, wiring and 12 volt battery in place. 2nd option is to obtain a 12 volt generator and replace the existing 6 volt unit. The big terminals (Load Circuit studs) are to the battery and the starter. Buy Reliable Aftermarket Parts Our Name Says It All -6 Volt to 12 Conversion Kit Side Mount Fits Ford 8N Tractor 263844 & Up: Spare & Replacement Parts - Amazon. For 9N, 2N, (early 8N 1948-1951) with Front Mount Distributor (distributor is right behind radiator), to serial number 263843. Post your questions on the Ford N board here and you will get better responses. Includes: Mounting Bracket; 12-Volt Small Alternator (1-Wire). Switching to an alternator eliminates the need for a. For starting and lighting, use original harness 12 Volt Conversion Kit Oliver found in: Electronic Ignition Conversion Kit, 12 Volt Alternator Conversion Kit, Farmall Cub, International Cub Lo-Boy, Electronic Ignition Conversion Kit, 6 volt positive ground, Electronic Ignition Hi everyone. I'm considering converting to 12v alternator system. Power Unit: U123, U2, U2A. I've installed the 12 volt conversion kit and the pertronix ignition kit from Yesterday's Tractor. “And you’re going to be a little boring, too. Those tractors have run fine on 6 volts for 80 years now. with the correct coil) 3) slightly longer fan belt The 12 Volt 35 Amp Alternator is used to convert the 6 Volt system to a 12 Volt system. A 6v to 12v Conversion to Improve Your Car! Changing over from 6v to 12v is one of the easier and cheaper projects to update an old car or truck. abc 6 columbus Ford 850 12v Conversion found in: Alternator Conversion Kit, Electronic Ignition Conversion Kit, 12 volt negative ground system, Electronic Ignition II Conversion Kit, 12 volt negative ground system, 12 Volt Alternator. Suitable For - Ferguson models , TEA20, TED20. If you go to my website you will find wiring diagrams for your Farmall H tractor depending on which alternator you are using. It senses the battery charged voltage and tells the regulator how much to charge. Even so, when you choose to parallel park it is often the only option to get your vehicle out of the roa. i prefer a delco 10si alternator because it will charge at low. Simple to wire, there are thousands of wiring diagrams and how to's on the web. Optima Batteries 8010-044 6v Battery Type:AGM Cranking Amps at 0 Degrees F:800 amps Cranking Amps at 32 Degrees F:980 amps Reserve Capacity:110 minutes Length. com and their complete kits, making your choice even easier. The 8 volt battery is possible, but a 12 volt would be a better overall conversion. If an engine is old and worn, any system will cause harder starting. So in this case you get 1000 amps cca from the 12 volt batteries. Simple to wire, there are thousands of wiring diagrams and how to's on the web. New 12v Starter Motor to convert Original 6v tractors to 12v Original 6v tra ctor starters have a short nose Volts: 12. Converting a "VA" Series to 12 volts is totally unnecessary. Arrives before Father's Day. wellness coach jobs Electronic Ignition Conversion Kit 12 Volt Negative Ground System. Cheaper batteries available anywhere. The little terminals should be labeled "S" and "I". Converting a Wd 45 Allis Chalmers Tractor from 6 to 12 volts improves the performance of your electrical system. Jul 19, 2010 think of the 3 wire as a 2 wire because you loop the #2 terminal to the charge stud so any schematic for a 1 wire can be converted to 3 wire by addition of a wire from the coil side of the ignition switch thru a 194 lamp to teh #1 terminal on the delco 10/12 si style alt, plus that loop from #2 to the charge stud K-n-L Country, Your 6 volt starter will be fine,but you might want to replace the old drive that is on it. Reverse the cables so you will have negative ground. The 12 volt battery here and 6 volt battery here are identically rated to the manufacturers battery. The 12 volt battery would work fine with the 6 volt starter and 12 volt lights -- but you would eventually need to recharge the battery. Advertisement What had been refer. Mine runs a resistor to the 6v ignition coil and points. Learn from the pros how to do it right When you’re out meeting new people, so many conversations lead to asking what the other person does for work. For the alternator, use a Delco type 10-SI because: 1 - The 10-SI was the "standard" alternator on most General Motors cars and on many farm tractors from the mid 70's thru the mid 80's. Long hood means it has an optional electric starter, but the older styled pan seat ("early styled" rather than. buy clonazolam A short slide show of some of the things i had to do to change from 6 volt to 12 volt on my M Farmall tractor. The 9/2n use a large diameter funky (by todays standards) hub. Blogger Gretchen Rubin lists seven topics of conversation to avoid if you don't want to be a bore. Electronic Ignition II Conversion Kit, 12 volt negative ground system …and operating conditions. Like why did the kit not come with a 12 volt voltage regulator? etc. Would not think twice about converting to 12 volt with an internal voltage regulator. I also agree that a 12V alternator is a good choice (especially when cost is the driving choice); however, it does not take many amps to keep a batter charged on a tractor since they do not have much draw after started (in fact I have "upgraded" to 12V and did not have a gennie. 601,801,901 Ford Tractor-6 VOLT-Generator Compatible with Ford Tractor(s) NAA; Converts from 6V to 12V; Includes: alternator, resistor, wiring harness, brackets, and hardware kit; Voltage: 12; Rotation: Clockwise; Amperage: 63; Regulator: Internal ; Includes pulley; For Coil Resistor use 105710; For Alternator use 111377; All new, rebuilt and used tractor parts have a 1-year warranty 4 5 10 gauge from alternator to amp meter and amp meter to battery cable at start switch/solenoid. There are many ways to avoid jackknifing. Double the Voltage to 12 Volts and we have 12X12=144/1. She writes: Blogger Gretchen Rubin lists seven topics of conversation to avoid if. My father has an early 1950's IH300 utility tractor. They do not use an ignition resistor with the original 6 volt system, so there are fewer options and much less confusion. Compatible with all 12-volt negative ground systems and 6-volt systems that have been converted to 12-volt negative ground. After some research of convert or not, I decided to go ahead. '51 8N would indicate it has the later Angle (Side) Mount distributor and steering box. Got a 140 tractor that was originally 6 volt with a generator where someone converted to 12 volt alternator. I was thinking it's maybe a candidate for a 12V conversion on a 1940's 6V tractor. Classic Car 6-volt to 12-volt Conversions - Classic Auto Advisors Tractor 6 volt to 12 How to - YouTube Tractor 12 Volt Conversion Step-by-step Part #1 - YouTube 24-Volt to 12-Volt Conversion Kit For John Deere Diesel Tractors - The 6 to 12 volt conversion - Yesterday's Tractors.
I just completed a full tune up last winter. Use the information above including the 12 volt conversion kit part number and picture (if available) to assist you in making your decision to purchase. Practice comes from doing it, from daily h. A term life conversion option lets you turn your expiring insurance policy into one that can last as long as you do. walmart sugar free cake I have replaced the 6v coil for a 12v coil so a ballast resistor is not required. My advice is to purchase a lifetime warranty alternator if you are planning on keeping the tractor. Well-known Member #1. * Posted May 7, 2017. pch blog for today Any tractor regardless of the brand built between about 1957 and 1965 or so would have had a 12v generator. Remove the 6-volt ignition coil from the coil bracket. The big blue and white wire go to the motor (or com1 and com2) WIRING DIAGRAMS FOR SIDE DISTRIBUTOR 8N (1951-52) Also good for the 1952-54 NAA TRACTORS FORD TRACTOR SIDE DISTRIBUTOR-6 VOLT FORD TRACTOR SIDE DISTRIBUTOR-12 VOLT-1 WIRE FORD TRACTOR SIDE DISTRIBUTOR-12 VOLT-1 WIRE, With Voltmeter replacing Ammeter Electronic Ignition Conversion Kit 12 Volt Negative Ground System. Some are DIY manufactured mounting brackets and some kits CRS. behr exterior premium plus Working on switching my tractors to 12v systems when a batt. Those tractors have run fine on 6 volts for 80 years now. Kit Fits 6 volt tractors 123205) with dual 5/16" pivot bolts. Updates older 6-volt tractors to 12-volt charging system. Getting plenty of fuel.
The steps to any 12 volt conversion using an alternator are basically: remove the old generator and regulator, create or buy brackets to mount the alternator, run or reroute a few wires to the alternator, replace 6 volt bulbs with 12 volt bulbs, and add a voltage dropping resistor in the ignition circuit. Alternator Conversion Kit fits Ford 9N 8N 2N 103139 $209 $14. Converting a "VA" Series to 12 volts is totally unnecessary. Colorado’s governor signed a refreshingly st. Kit was listed for my tractor by ser# and year. In addition, we have a generous 30-day return policy if this item needs to be returned for any reason. Panzerkampfwagens I and II were secretly developed by the Nazis in defiance of the Versailles Treaty. Convert your 6 volt antique Farmall tractor to a 12 volt system with this easy to follow step by step video tutorial. because these tractors can all use a true 12-volt round can type coil. I have done a 12 volt conversion and it has only ran one time since and then I had to jump it because I found my neutral safety switch bad. Reference ID: 5564-10300ALT All new, used and rebuilt parts have a 1-year warranty $ 150 New, aftermarket Ford 4000 12 Volt Conversion Kit for sale with. The I pin is connected to voltage when the starter activates. Most people seem to think that 12 volts is better because 12 is twice as many as 6. Number of Flange Holes: 2 Mounting Hole Centers 105mm Please note this item is NOT a reconditioned unit and has the terminal on the end not on the side as in the picture. Vintage Auto Garage can develop a complete parts list for your specific car here. Unlike some conversions we've seen online, we just ran one wire off the alternator. A 6v to 12v Conversion to Improve Your Car! Changing over from 6v to 12v is one of the easier and cheaper projects to update an old car or truck. The reason for useing 6 volt batteries is a 6volt battery has longer cranking power than a 12 volt battery. Never change points again! Easy installation, no complicated wiring, fits entirely inside distributor. The big terminals (Load Circuit studs) are to the battery and the starter. * 10SI * 63 amp* 6-1/4" housing diameter* 2-1/2" pulley diameter* 5/8" belt width* If you need a 1/2" pulley please order ABC1426 also* Internal regulator* New; not rebuilt* Converts 6V to 12V* Simple 1 wire…. Please Verify Fit Prior To Ordering. If you’re the kind of person that struggles with small talk, then you probably also struggle with how to end a conversation; after all, when a conversation reaches an awkward silen. Ferguson To30 12 Volt Conversion found in: Alternator Conversion Kit, Electronic Ignition II Kit, 12 Volt Negative Ground, 6 Volt External Voltage Regulator, 12-Volt One Wire Alternator, Alternator Bracket Kit, Flame-Thrower II 12 volt conversion for TO30 ONLY. payday friday gif CDC - Blogs - Conversations in Equity - A blog devoted to increasing awareness of health inequities and promoting national, state, and local efforts to reduce health disparities an. For 9N, 2N, (early 8N 1948-1951) with Front Mount Distributor (distributor is right behind radiator), to serial number 263843. The new switch is a 3 position switch instead of 2 position. If you are looking for a different 12. What I really would love some help with is the wiring diagram. For 8N Model With Side Mount. Models without Cultivators. I have made the new bracket and just about have everything ready to go. Learn what exactly micro-conversions are, why they matter, and how to. In addition, we have a generous 30-day return policy. Fixing a hydraulic leak might be as simple as tightening a hose fitting. Step by step instructions for converting from 6 volt to 12 volt. It is best to replace the 6V coil with a 12V unit with a built-in resistor. Points and condensers in these tractors operate just fine on 6 or 12 volts. NEW YORK, June 14, 2021 /PRNewswire/ -- Ideanomics (NASDAQ: IDEX) is pleased to announce it has fully acquired Solectrac Inc. For 9N, 2N, (early 8N 1948-1951) with Front Mount Distributor (distributor is right behind radiator), to serial number 263843. Having that it is COLD outside; I thought I would ask here before baring it trying to troubleshoot. A 12 volt system allows you to use modern automotive electrical accessories (lights, tools, some implements) which are not available in a 6 volt version. ron shaw Many models can use our 63 Amp One Wire Alternator with Pulley for converting from 6 volt to 12 volt. You could have it rewound as some have already done this, it is possible to get a new starter for it. The same setup will explode the battery. Opens in a new window or tab $239 Top Rated Plus. (2) 12-volt battery (make sure it will fit). Many investors convert traditional IRA accounts into Roth IRA accounts in order to benefit from low tax rates. Electronic Ignition II Conversion Kits have a safety feature to prevent the module from burning out if the key is left in the ON position. 85 OHMS of resistance 0. You can jump start a car with a 12 volt tractor. Use the information above including the 12 volt conversion kit part number and picture (if available) to assist you in making your decision to purchase. I Google searched and found a diagram for a Jubilee that looked like it would work Update on Light Switch. Updates older 6-volt tractors to 12-volt charging system. Learn more about Panzerkampfwagens I and II. Starter Motor 6v /12v Conversion (TEA) Code: ABC003700 Inc VAT £155 Quantity Please Contact Us for larger quantities of this product. Price: $149 Quickview. For the alternator, use a Delco type 10-SI because: 1 - The 10-SI was the "standard" alternator on most General Motors cars and on many farm tractors from the mid 70's thru the mid 80's. Although my tractor is not a Farmall--most of the guidance is approprite for my Ford 600. Converting a "VA" Series to 12 volts is totally unnecessary.