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Datsun 1200 was fitted with a lightweight 35 AMP Hitachi alternator. These alternators will usually last 10-15 years or more than 100,000 miles. The only normal maintainence is to replace the brushes when the dashboard alternator light starts flickering. The alternator uses an external Voltage regulator.

The early A-series engines (1966-1973) mount the alternator down low on the left side of the engine, under the intake manifold. 1973-up engines mount it high on the right side of the engine.

1 Wiring
2 Interchange
3 Part Numbers
- 3.1 Brushes
4 Regulator
5 Upgrades

Wiring

See: Wiring article.

Interchange

Strict interchange:

Alternator (35 AMP model)
- 510 1968-early 1971 USA
- 521 1969-early 1971 USA
- 620 1973-1979 USA
Alternator (50 AMP model)
- F10 1976-1977 USA
- 510 Late 1971 USA
- 521 Late 1971 USA
- 620 1973-1979 USA

Loose interchange: Many kinds of alternators. See Upgrade section below.

Part Numbers

http://www.rockauto.com

23100-U0100 Stock 35 amp Hitachi LT-135-13
- 23100-U0102 Hitachi LT-135-35B
- 23100-U0103 Hitachi LT-135-35C
- OE+ AL208 $18.04 USD
- BECK/ARNLEY 1860077 $35.79
- BOSCH AL231X,AL232X $50.79

B210 A13 engine 50 amp Hitachi LT-150

23100-P0101 ASSY-ALTERNATOR OP -0973
23100-H6203 ASSY-ALTERNATOR OP 1073-0874
- replaces 23100-P0101, 23100-H6200, 23100-H6201, 23100-H6202

B210 A14 engine 50 amp Hitachi LT-150

Looks like stock 35A
23100-H7200 0974-0375
23100-H7201 0475-0975
23100-H7202 0575-0177
23100-H7203 0277-0777
23100-H7204 replaces H7200/01/02/03
Bosch AL237X ['http://www.rockauto.com/catalog/x,carcode,1210813,parttype,2412,EPIsubcategory[97],Alternator,partGroup,18' $75.79 RockAuto.com]

B210 1978 50 amp Hitachi LR150-36

23100-H7700 0877-

Brushes

Hitachi LT

Nissan 1970-1978
Subaru 1977-1978
Isuzu (Chevrolet) 1975-1987

B110

23133-H0300 ASSY-HOLDER,BRUSH $5.95

Brush Assembly with cover

23133-U0101 ASSY-BRUSH B210 -0874 $10.97
- replaces 23133-U0100
23133-P0100 ASSY-BRUSH B210 0974 $12.19

Brush Assembly

23135-H0300- F B110, B210 A13 $5.95
23135-H0301- E B110, B210 A13

Brushes, requires soldering

STANDARD MOTOR PRODUCTS Part # JX107 $2.79

Brush Assembly LR150 (B210 from 0877)

23135-P2500 BRUSH ASSY LR150
23133-P2501 BRUSH REGULATOR ASSY LR150 replaces 23133-P2500
- Includes IC regulator
STANDARD MOTOR PRODUCTS Part # VR592

Regulator

B110 uses an external voltage regulator. It uses a connector with spade terminals, and so is different from B210 which uses round pins. It controls the alternator output to between 13.5-15.0 volts.

See main article: Voltage regulator

Upgrades

If you are running high-power headlights, off-road lighting systems, or high-power stereo gear, using a high output alternator is called for. Or, if you need to replace the 1200 alternator and have free or inexpensive access to different alternators, you might consider a swap. Lastly you might have a bad Voltage regulator, and by swapping to an internally-regulated alternator reliability increases since these use a solid-state (no moving parts) regulator.

There are two major considerations in a swap:

Physical swap. How does it bolt to the A12 engine?
Electrical swap. How will the new alternator be connected to the wiring?

For more details, see Alternator Upgrades.

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Alternator