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Discussion Forum
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Re: 1950 WD 12v Wiring Diagram

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Author 
steve

09-12-2002 20:12:30




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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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