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D171958 
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Joined: 03 Aug 2024
Location: Iowa
Points: 36
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 Topic: 6v or 12v
Posted: 25 Dec 2024 at 6:12pm |
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I got a series one d17 and I was wondering if 12v or 6v would be better and if I should leave the points in the distributor or get an electric conversion kit.
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DrAllis
Orange Level Access
Joined: 12 Sep 2009
Points: 20732
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Posted: 25 Dec 2024 at 6:34pm |
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Any age D-17 was always 12 volts. Never 6 volts. Electronic ignition won't make it run any better, just reduces maintenance over the years.
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jvin248
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Joined: 17 Jan 2022
Location: Detroit
Points: 337
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Posted: 25 Dec 2024 at 6:34pm |
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I rebuild for function, not authentic factory features which you and other comments may chase, this is the setup I prefer:
12v neg ground
LED lights or bulbs
Good quality ignition key switch for boating wet conditions
Electronic ignition won't survive an EMP event... Verify your coil is 12v internal resistor type Alternator with internal regulator, either the big Delco/GM or the Denso small one used by the hot rod builders as it tucks away easier.
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Edited by jvin248 - 25 Dec 2024 at 6:42pm
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DrAllis
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Joined: 12 Sep 2009
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Posted: 25 Dec 2024 at 6:36pm |
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12 volt POSITIVE ground with a generator on an A-C.
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youngorange2000
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Joined: 27 Mar 2019
Location: eastcentral MN
Points: 314
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Posted: 25 Dec 2024 at 10:25pm |
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I just did one for a guy that had the original 12v generator with the external voltage regulator and positive ground. We trashed that rats nest for a new brillman 12v neg ground 1 wire alternator harness and a new alternator. I the end it was cheaper to go with a $85 alternator rather than have the generator rebuilt for $60 and still have to buy a $115 USA made voltage regulator.
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 81833
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Posted: 25 Dec 2024 at 10:30pm |
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if your present generator is working, it would be Positive ground... no problem... BUT, if it is bad or goes bad, that is definitely the time to consider an alternator and NEG ground.
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Like them all, but love the "B"s.
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11852
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Posted: 25 Dec 2024 at 11:40pm |
The cheaper way to go is usually with an Alternator. Some people don't like the look of an Alternator on the older Tractors. Some what the reliability not the originality. Your call there. If you go with an Alternator, its better to wire it three wire not one wire especially on the older Tractors. Loose the Ammeter and install a Voltmeter for safety and accurate charging rates.
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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D171958
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Joined: 03 Aug 2024
Location: Iowa
Points: 36
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Posted: 18 hours 50 minutes ago at 8:15am |
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Ok so what kind of coil should I use if it’s 12v positive or negative.
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DrAllis
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Joined: 12 Sep 2009
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Posted: 18 hours 46 minutes ago at 8:19am |
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Same coil. Just switch the wires around. Positive ground on the battery needs + post on the coil to the distributer. Negative ground on the battery needs - post on the coil to the distributer.
Edited by DrAllis - 18 hours 46 minutes ago at 8:19am
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 22683
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Posted: 18 hours 35 minutes ago at 8:30am |
My 'vote' is for 12v alternator. I use the CS130 series...small in size, 40 amps, free. Wire into 'idiot light'. If someone whines about 'ewww an alternator' tell them,'fine YOU pay for a generator. Either way, as 12v , use negative ground. saves a lot of spark when you jump start that guy's truck who said 'ewww, an alternator' !!!
Electronic ignitions are NOT bullet proof. Hooked up wrong and zappp.... $150 piece of artwork, and no running tractor....
In the end ,it's your tractor, your choice.
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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(ill)
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Joined: 11 Sep 2009
Location: illinois
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Posted: 14 hours 28 minutes ago at 12:37pm |
your coil should say 12v with INTERNAL resistor on the case.... any coil like that will work.
if the system is NEGATIVE GROUND then the neg side of the coil goes to the distributor point... If it is POSITIVE ground, then the POS side of the coil goes to the distributor point.
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Like them all, but love the "B"s.
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jvin248
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Joined: 17 Jan 2022
Location: Detroit
Points: 337
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Posted: 8 hours 55 minutes ago at 6:10pm |
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Use an ohm meter on the coil to verify it has the internal resistor. 3ohms = resistor, 1.5ohm = coil for external resistor.
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jvin248
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Location: Detroit
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Posted: 8 hours 52 minutes ago at 6:13pm |
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Many of us have found the distributor tune up kits have bad condenser/capacitors and retrofit the old one that was in the tractor. So don't throw out all the old parts when fixing it up.
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D171958
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Joined: 03 Aug 2024
Location: Iowa
Points: 36
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Posted: 8 hours 35 minutes ago at 6:30pm |
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Ok thanks for the help I’ve decided to keep it 12 negative and put an alternator on with the electric conversion
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
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Posted: 8 hours 25 minutes ago at 6:40pm |
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great..now consider a 100% rewire while your at it. That way you KNOW you have GOOD wires..here,there, everywhere.
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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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D171958
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Joined: 03 Aug 2024
Location: Iowa
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Posted: 7 hours 55 minutes ago at 7:10pm |
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I was planning on it because it sat outside for years and it’s an ffa project and family project and I don’t want to skimp on it.
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