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Discussion Forum
:

1950 WD 12v Wiring Diagram

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Tulsa TractorGuy

09-12-2002 19:28:38




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We have a 1950 WD with an Alternator that has two wires. The wiring on this tractor is a total mess. We have been charging the battery externally and must disconect a battery cable when not in use because it will drain out completely. Does anyone out there have a complete schematic diagram that can be posted on the internet or perhaps mail me a copy. I would be very appreciative!!!!!Tulsa TractorGuy!!!

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Steve in N.J.

09-13-2002 05:44:24




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 Re: 1950 WD 12v Wiring Diagram in reply to Tulsa TractorGuy, 09-12-2002 19:28:38  
Tulsa,
With nighmare wiring jobs make sure you don't have any "hot" wires grounding themselves inside the ammeter box where you can't see them. Usually there's a lot of confusion inside these boxes (along with bees n'bugs) and all it takes is one wire to ground itself and you've got problems. Might be a good idea to have the alternator checked to make sure that's working correctly for starters, then move on down the harness checking all circuitry. Duey has some great drawings there you can use for a guide. Also, if the alternator is an "SI" series (internally regulated) some have a threaded hole in the back of them. Install an auxilery ground wire from that hole to the engine block. This adds an extra ground so the alternator charges correctly. I offer a 12V conversion harness kit for B/C Models, but I could design it for a WD if the wiring is to shot to fix... Good Luck, hope you get it straightened out! Steve B.

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steve

09-12-2002 20:12:30




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 Re: 1950 WD 12v Wiring Diagram in reply to Tulsa TractorGuy, 09-12-2002 19:28:38  
the most common alternator around is the DELCO used by General MOtors cars in the 1975-1985 era. You should have a plug on the side of the alternator with two prongs in line like -- , not parallel like ll. The plugs ae numbered F or 2, and R or 1 depending on the year. There is also a 1/4 inch lug on the back of the alternator. The big lug is the battery terminal (might go thru the ampmeter then to battery. The small F terminal can be connected directly to the big lug and have 12 volts all the time. The other ternimal R (or 1) has to be switched off when the motor is not running so the battery will not discharge. This can be connected to the key or a toggle switch. IT also helps to have a 10 ohm- 10 watt resistor in this line to drop the voltage slightly and make the alternator charge better. You can buy this a Radio Shack. about 1/4 inch square and 3 inches long. Dueys drawings are good to follow, the above is just a description of what the wires do. You can buy a nice 2 prong plug made for this alternator at Auto Zone for the modification. REmember the plug must be -- . If it is ll it has no internal regulator. If you have a newer Delco from 1985-2000 ro a Japaneese model, they work similar, but you got to figure out the plug numbers.

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Duey (IA)

09-12-2002 19:51:11




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 Re: 1950 WD 12v Wiring Diagram in reply to Tulsa TractorGuy, 09-12-2002 19:28:38  
Tulsa TractorGuy, I think you will find what you want on my web page. Duey



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Tulsa TractorGuy

09-14-2002 10:49:27




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 Re: Re: 1950 WD 12v Wiring Diagram in reply to Duey (IA), 09-12-2002 19:51:11  
Duey, I know this is a stupid question, but your wiring diagram does not show the cable to the starter or a selinoid (or something like a switch) that will provide the fire to the starter. Could you please tell me how that portion of the wiring diagram works. THANKS MILLIONS!!!! Dumb Tulsa TractorGuy----



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Duey (IA)

09-14-2002 13:58:25




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 Re: Re: Re: 1950 WD 12v Wiring Diagram in reply to Tulsa TractorGuy, 09-14-2002 10:49:27  
Tulsa TractorGuy,
It's there, unless you were looking at the wrong diagram. Scroll around to find what you need. If you want to use a solenoid, you must change the connection on the starter, other wise use the same manual pull start. Duey

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Tulsa TractorGuy

09-15-2002 09:14:36




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 Re: Re: Re: Re: 1950 WD 12v Wiring Diagram in reply to Duey (IA), 09-14-2002 13:58:25  
Duey, I am unable to get your wiring diagrams when I click on your ((6 to 12 conversion/ with selenoid)) or your ((6 to 12 conversion with manual pull start)). My machine says that your WEB site is unavailable. Can you e-mail the complete wiring diagrams directly to me? I would sure appreciate it if you would! I'm sorry to be so much trouble!!!! Tulsa TractorGuy the REAL DUMMY!!!!



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Tulsa TractorGuy

09-15-2002 09:14:14




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 Re: Re: Re: Re: 1950 WD 12v Wiring Diagram in reply to Duey (IA), 09-14-2002 13:58:25  
Duey, I am unable to get your wiring diagrams when I click on your ((6 to 12 conversion/ with selenoid)) or your ((6 to 12 conversion with manual pull start)). My machine says that your WEB site is unavailable. Can you e-mail the complete wiring diagrams directly to me? I would sure appreciate it if you would! I'm sorry to be so much trouble!!!! Tulsa TractorGuy the REAL DUMMY!!!!



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Duey (IA)

09-14-2002 14:10:48




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 Re: Re: Re: Re: 1950 WD 12v Wiring Diagram in reply to Duey (IA), 09-14-2002 13:58:25  
This one shows the manual pull start wiring. The diagram does not show the pull rod to the switch, just the switch on the starter. Duey



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