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ddgonzal
Which alternator?
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oldrunner asked:
Quote:
Help!!!

I go through alternators on my 1200 like once every two years.

Was told to change the regulator as well.

It, however, has a harness with 6 wires where the wiring from the car has 4 attached to its harness. How do I attach them?

But last night spoke to a young man who is the only one I know in Orange County that has a 1200.

He has a alternator with its voltage regulator inside it.
He suggested I write to you.

So as an alternative, instead of installing the standard alternator and regulator what other alternator with its own regulator do you recommend I swap?

Thanks for any suggestions.

Posted on: 2016/11/21 3:33
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ddgonzal
Re: Which alternator?
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Datsun alternators usually last 10 years/150,000 miles. So something seems wrong in your situation


Quote:
change the regulator ... has a harness with 6 wires
Yes, that's a normal 1200 voltage regulator

Quote:
where the wiring from the car has 4 attached to its harness
Before 1970, Datsun used a 4-wire alternator. Sounds like your 1200 has been modified sometime in the last 40 years!

Pre-1200 alternator
Open in new window

These are 25A or 30A units, and a 1200 uses more than that with heater and headlights

For a 1200, use a 35A alternator. Fix your wiring to use the standard 35A voltage regulator (six-wire regulator)

Posted on: 2016/11/21 3:50
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ddgonzal
Re: Which alternator?
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Datsun 1200 (1970-1973) alternator is 35A and plastic cover on the back
Open in new window


Open in new window


Datsun 1200 Voltage Regulators come in various colors and differing heights but all have six-terminal connectors
Open in new window


Open in new window

Posted on: 2016/11/21 4:13
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BeeJJ
Re: Which alternator?
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I have a 50A that an autosparkie friend found for me. Bolts straight on and works with the standard regulators. If people are interested I will take some pics and get a part number for you

Posted on: 2016/11/21 6:08
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ddgonzal
Re: Which alternator?
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Yes, the common B310 50A/60A unit fits late A12 engines (just needs a longer fan belt)

But it won't connect up to the 4-wire harness. Nor does it fit well with a 1970-1973 A12 engine, where it hits the radiator hose. The common 1980s 35A internally-regulated Nissan unit fits better

Posted on: 2016/11/21 8:24
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BeeJJ
Re: Which alternator?
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ah yes makes sense mine is on my a14

Posted on: 2016/11/21 13:17
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ddgonzal
Re: Which alternator?
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The internally-regulated alternator is a direct bolt-on. It comes from USA 1980 Datsun 720 pickup 35A or AUS Datsun N12 35A

Rockauto.com $38.99
Baxter's Australia
* 23100-B9802R Reman Alternator $260.33 from Nissan
* 23100-B9810 Mitsubishi A1T22971
* 23100-B9800/23100-B9801/23100-B9802/23100-B9805 Hitachi

This unit was also installed in JAPAN factory 1200s from 1982-1994

It requires a simple wiring change. For more information, see LR135

Posted on: 2016/11/21 20:13
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