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kujo 
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Joined: 25 Nov 2018
Location: treynor IA
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 Topic: 6 volt to 12 volt conversion om Allis Chalmers C
Posted: 08 Feb 2020 at 8:26pm |
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when doing the conversion is it best to use a one wire alternator or a two wire because i have had trouble with amp meter showing a negative discharge and the tractor dies. Any help would greatly be appreciated i would like to talk to someone with experience in this matter. I'm in treynor Iowa 402-203-4171 Thanks
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Steve in NJ
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Location: Andover, NJ
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Posted: 09 Feb 2020 at 8:59am |
Its always easier on the engine especially if you go to the three wire setup. Most one wire Alternators need 1200-1400 rpm in order to "excite" the regulator in a one wire to start the changing process. With a three wire setup, 400-450 rpm is all you need and the Alt is already charging. No revving of the engine. Your engine will be happy.
We offer complete 6-12V conversion kits if interested. Also, Alternator bracket kits. Visit our website. There's a lot of information there on 12V conversions and the do's and don't with running electrical. Its always safer to run a Voltmeter when using and Alternator. An Ammeter is a flow meter and needs full power running through it to tell you something. A Voltmeter just splices into the system, and gives you accurate voltage outputs. Like I mentioned, a visit to our website will answer a lot of questions you may have on 12V conversions.. HTH Steve@B&B bb-customcircuits.com
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Boss Man
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Posted: 09 Feb 2020 at 3:22pm |
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What Steve said
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CTuckerNWIL
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Location: NW Illinois
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Posted: 09 Feb 2020 at 5:33pm |
The ammeter has to be wired properly for the charging set up you have. Original would have been positive ground, and you alternator is probably negative ground, so the wires need switched around on the ammeter. If the alternator is actually killing the engine, something isn't hooked up right.
Edited by CTuckerNWIL - 12 Feb 2020 at 4:22pm
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Steve in NJ
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Posted: 10 Feb 2020 at 7:02am |
Tuck, Read your post. You're backwards. Alternator's are Neg ground.... LOL!! You know that, you just typed it wrong... LOL! We're gettin' old buddy! Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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CTuckerNWIL
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Posted: 12 Feb 2020 at 4:24pm |
 Steve in NJ wrote:
Tuck,Read your post. You're backwards. Alternator's are Neg ground.... LOL!! You know that, you just typed it wrong... LOL! We're gettin' old buddy! Steve@B&B |
Steve, evidently when you're half dyslexic, ya don't see those mistakes, even if you proof read it  I fixed it though.
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Stan R
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Location: MA
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Posted: 12 Feb 2020 at 4:34pm |
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I converted our D17 IV from 12V positive ground to negative ground using Steve's alternator conversion kit last year and the tractor charges at the lowest idle. Maybe a bit more complicated and perhaps more money, but I'd go the three wire mode.
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jaybmiller
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Joined: 12 Sep 2009
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Posted: 12 Feb 2020 at 9:04pm |
re:... Alternator's are Neg ground.
MOST, not all Alternators are negative ground. You can buy ($$$) +ve ones...
I used CS130 series alternators, stock pulleys, on 4 D-14s, all charge fine.... You need to 100% rewire the tractor though, otherwise the gremlins WILL come and bite yer ,um, derrier.
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Steve in NJ
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Posted: 13 Feb 2020 at 7:00am |
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I've built a few positive ground Alternators in my day.... 6 & 12V
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Sugarmaker
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Posted: 13 Feb 2020 at 8:05am |
I believe the C has some space restrictions. You might look for a Denso type (smaller) set up as a one wire with low RPM charging. Yes I have one on my IH Dozer. It works great. It was not cheap. about $175. But it works and is a true 1 one wire small alternator neg ground. I use a volt meter rather than a amp meter as recommended by Steve. Have done 5 tractors with the volt meters. I have used 3 wire on my WD series tractors, with a diode in the exciter wire. My 2 cents. Regards, Chris
Edited by Sugarmaker - 13 Feb 2020 at 9:04pm
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D17 1958 (NFE), WD45 1954 (NFE), WD 1952 (NFE), WD 1950 (WFE), Allis F-40 forklift, Allis CA, Allis D14, Ford Jubilee, Many IH Cub Cadets, 32 Ford Dump, 65 Comet.
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CTuckerNWIL
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Posted: 13 Feb 2020 at 10:37am |
jaybmiller wrote:
rYou need to 100% rewire the tractor though, otherwise the gremlins WILL come and bite yer ,um, derrier.
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Don't say that too loud, my 45 has had a used 10Si alternator on it for 15 years or more, and it still has the original wiring(except for the hot wire to the coil, which somebody replaced at one time). I just removed the 3 way switch and put a toggle in for the lights. Maybe if I ever get around to replacing the wore out key switch, I will string some new wires
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jaybmiller
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Posted: 13 Feb 2020 at 10:47am |
well now we all know what you'll be doing this weekend !!!  I won't say anymore.....
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Steve in NJ
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Posted: 13 Feb 2020 at 10:54am |
LOL!! Tuck yer' killin' me! You are to much!
For the C,CA and the G, kits I offer, I use the Denso Alternator and not the "SI". I used to offer the "CS" series, but being the Denso is just a tic smaller, it gives more room on all three of those model Tractors. Especially on the little G. I wire my Denso's to 3 wire design keeping with the immediate charging process at low rpms where these Tractor engines like it. The Denso does make the kits more expensive, but makes a real nice 12V conversion kit for the guys who aren't bothered with using an Alternator rather than a Gennie. The "CS" series Alternators are optional on the other kits I offer, like for the B, & IB. Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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cpg
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Location: Michigan
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Posted: 13 Feb 2020 at 11:00am |
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I have used a Hitachi 3 wire mini alternator on several of my old tractors. Not really that hard to wire and I do like how they will excite at a low rpm. I also have always gone to a voltmeter that turns on with the ignition rather than staying with the ammeter. Have one on my Allis WD and it works great for running better lights and starting in cold temps for blowing snow.
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CTuckerNWIL
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Posted: 13 Feb 2020 at 11:11am |
Steve in NJ wrote:
LOL!! Tuck yer' killin' me! You are to much! Steve@B&B |
Well, I had this alternator given to me, when a guy scraped out an old rusted out Chebby Blazer. Since I had no idea if it was going to work, I wasn't going to spend my time or money putting a new harness on it. It's too crusty looking for that anyway It's just one of those things that never broke, so why fix it 
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Ted in NE-OH
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Posted: 13 Feb 2020 at 2:55pm |
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Anyone have a wiring diagram for a 3 wire alternator for a tractor.
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CA, WD, C, 3 Bs, 2 Gs, WC, I-400, 914
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HudCo
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Posted: 13 Feb 2020 at 10:17pm |
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do not use a one wire alternator you wil hate it,, go with the thre wire setup and personaly i would replace the amp meter with a voltmeter the only thing you needto see is your volts if it isnt charging you wount have volts ,also ampmeter would have to be a 60 amp rated at the min. its not any harder to wire a 3 wire one and you will not have the smallest pulley you can find and have to get it to full throtle every time you start it excite
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levipatch
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Posted: 14 Feb 2020 at 7:25am |
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For what its worth , I bought a mini alt. for 35 $ (NEW ) from a site on here, put it on a series 4 17 D with one wire thru the amp gauge. It charges before the starter even winds down. Show s amps , works perfect. Cant believe all the issues I see on here about how many wires you need. I do have batt disconnect when tractor not used. Can leave it on with no problems if I want..... SO.......
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Billy..Big cam 300, bcam 400,,941 CAT.,,Deere excavator..900 row crop.. 66 D 17 diesel IV... 985 Pratt and Whitney..4360 Pratt and Whitney... gitten tired !
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AaronSEIA
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Posted: 14 Feb 2020 at 7:30am |
Most conversions I've seen done recommend the Delco 10SI. I have yet to figure out if that's a 3 or 1. I've also seen them done with and without a diode, resistor, or bulb of some kind tied into the charge wire. Someone should do a "once and for all time" wiring diagram and put it in the knowledge base. AaronSEIA
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jaybmiller
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Posted: 14 Feb 2020 at 7:36am |
10SI is OLD and BIG and 3 wire...low amps
CS130 is newer and smaller and 3 wire...high amps
I get CS130s for free from scrapped cars, 3 D-14s with them, zero problems. I have 'idiot' light on one, a resistor on another and 3rd is 'one wire' setup...oh yeah, they all have different mtg brkts !!!
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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cpg
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Posted: 14 Feb 2020 at 8:25am |
Here is the wiring diagram I have used on all my tractors with distributors and a 3 wire Hitachi 14231 mini alternator. So far have installed one on my Allis WD, a Farmall H, and a Ferguson TO-20 and they work great. 
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Charlie175
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Posted: 14 Feb 2020 at 9:02am |
levipatch wrote:
For what its worth , I bought a mini alt. for 35 $ (NEW ) from a site on here, put it on a series 4 17 D with one wire thru the amp gauge. It charges before the starter even winds down. Show s amps , works perfect. Cant believe all the issues I see on here about how many wires you need. I do have batt disconnect when tractor not used. Can leave it on with no problems if I want..... SO....... |
Same here. Fit in with no issues and minimum changes
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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Ted in NE-OH
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Posted: 14 Feb 2020 at 9:12am |
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What part number for alternator?
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CA, WD, C, 3 Bs, 2 Gs, WC, I-400, 914
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Charlie175
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Posted: 14 Feb 2020 at 9:57am |
Ted in NE-OH wrote:
What part number for alternator? |
This is what I purchased.
Can't go wrong with the others noted earlier in the thread as they give you full support
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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jaybmiller
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Posted: 14 Feb 2020 at 10:02am |
FYI...from the spec sheet , pulley is 2.7" in diameter... I'm thinking stock genny is 3.5, so it'll spin faster which is good.
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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levipatch
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Posted: 14 Feb 2020 at 11:03am |
New for Alternator Chevy Mini SBC BBC 1-WIRE 35 AMP 1-2119-11NDSE 12180-SEN New for Alternator Chevy Mini SBC BBC 1-WIRE 35 AMP 1-2119-11NDSE 12180-SEN Seller : 97.4% Positive feedback Save this Seller Don't know if I did this rite, But I stand corrected,,, Price is 38$
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Billy..Big cam 300, bcam 400,,941 CAT.,,Deere excavator..900 row crop.. 66 D 17 diesel IV... 985 Pratt and Whitney..4360 Pratt and Whitney... gitten tired !
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levipatch
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Posted: 14 Feb 2020 at 11:14am |
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City Green alt. on E bay... This is whar its at. Maybe you can find it.... I don't know bout this puter anymore. Im out dated .
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Billy..Big cam 300, bcam 400,,941 CAT.,,Deere excavator..900 row crop.. 66 D 17 diesel IV... 985 Pratt and Whitney..4360 Pratt and Whitney... gitten tired !
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AaronSEIA
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Posted: 14 Feb 2020 at 3:13pm |
Is this a smaller version of a 10SI? Wired the same anyway? AaronSEIA
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Luke114
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Posted: 14 Feb 2020 at 4:10pm |
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I've been looking at those mini Denso alternators and they look like a great fit. I'm a little confused reading reviews on them in various places, with some buyers saying they are definitely not a one wire alternator and other saying yes. They clearly have a couple extra terminals there, and the warning light circuit makes sense. But why the other ignition circuit terminal? Is it needed?
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levipatch
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Posted: 14 Feb 2020 at 4:37pm |
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Works with one wire period, don't even look at the plug........ This is self regulated works great.......Why pay all that money, all that work, all that wiring,,for what??????????? You could buy one a year for 38 $ and still save money, just saying.....Mines got 50 hours and alls well !
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Billy..Big cam 300, bcam 400,,941 CAT.,,Deere excavator..900 row crop.. 66 D 17 diesel IV... 985 Pratt and Whitney..4360 Pratt and Whitney... gitten tired !
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