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6v or 12v

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D171958 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote D171958 Quote  Post ReplyReply Direct Link To This Post Topic: 6v or 12v
    Posted: 25 Dec 2024 at 6:12pm
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 25 Dec 2024 at 6:34pm
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jvin248 Quote  Post ReplyReply Direct Link To This Post Posted: 25 Dec 2024 at 6:34pm
.

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.

.


Edited by jvin248 - 25 Dec 2024 at 6:42pm
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 25 Dec 2024 at 6:36pm
12 volt POSITIVE ground with a generator on an A-C.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote youngorange2000 Quote  Post ReplyReply Direct Link To This Post Posted: 25 Dec 2024 at 10:25pm
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) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 25 Dec 2024 at 10:30pm
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.
Like them all, but love the "B"s.
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Steve in NJ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve in NJ Quote  Post ReplyReply Direct Link To This Post 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
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote D171958 Quote  Post ReplyReply Direct Link To This Post Posted: 18 hours 55 minutes ago at 8:15am
Ok so what kind of coil should I use if it’s 12v positive or negative.
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 18 hours 51 minutes ago at 8:19am
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 51 minutes ago at 8:19am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jaybmiller Quote  Post ReplyReply Direct Link To This Post Posted: 18 hours 40 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.
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 14 hours 33 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.
Like them all, but love the "B"s.
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jvin248 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jvin248 Quote  Post ReplyReply Direct Link To This Post Posted: 8 hours 60 minutes ago at 6:10pm
.

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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Post Options Post Options   Thanks (0) Thanks(0)   Quote jvin248 Quote  Post ReplyReply Direct Link To This Post Posted: 8 hours 57 minutes ago at 6:13pm
.

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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Post Options Post Options   Thanks (0) Thanks(0)   Quote D171958 Quote  Post ReplyReply Direct Link To This Post Posted: 8 hours 40 minutes ago at 6:30pm
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote jaybmiller Quote  Post ReplyReply Direct Link To This Post Posted: 8 hours 30 minutes ago at 6:40pm
great..now consider a 100% rewire while your at it. That way you KNOW you have GOOD wires..here,there, everywhere.
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote D171958 Quote  Post ReplyReply Direct Link To This Post Posted: 7 hours 60 minutes ago at 7:10pm
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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