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[Datsun 1200 encyclopedia]

Coil Wiring

(Difference between revisions)

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Categories: Engine Electrical System | Distributor

Revision as of 20:11, 19 October 2012
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Revision as of 20:26, 19 October 2012
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= Early 1200 = = Early 1200 =
-Ballast resistor is located on the right-side Strut tower (#1 in this photo) 
-<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=14969 http://datsun1200.com/modules/myalbum/photos/14969.jpg] 
-<br>The resistor is just above the coil, and is a white ceramic thing about 2-1/2 inches long. 
- 
NOTE: The 1973 [[Wiring Diagram]] doesn't show a resistor, but it definitely has one. NOTE: The 1973 [[Wiring Diagram]] doesn't show a resistor, but it definitely has one.

Revision as of 20:26, 19 October 2012

The early 1200 coil -- as with nearly all pre-electronic ignition systems -- uses a Ballast resistor to drop the voltage supplied to the coil. All 1200s used a ballast resistor until the 1990 models.

Early 1200

NOTE: The 1973 Wiring Diagram doesn't show a resistor, but it definitely has one.

Stock wiring harness
23408.jpg

Ballast ResistorColorConnects To
ballast resistor (non-coil side)BWIG terminal of ignition switch
ballast resistor (coil side, dual-terminal sideBW
BR
BR wire to R (START) terminal of ignition switch\*
(and)
BW to coil '+' terminal
CoilColorConnects To
Coil '+'BWto ballast resistor dual-connector side
Coil '-'Bto distributor points
\*The coil is supplied full battery voltage during cranking. Hence "R" terminal on ignition switch supplies V+ to coil.

23244.jpg
NOTE: all the wires indicate are colored BW (black w/white stripe).

Common Problems

Does your engine start when cranking but immediately die when you release the key to the ON (running) position? Then your resistor is bad or wired incorrectly. As you can see from the diagram, START of the ignition switch supplies full voltage bypassing resistor.

Late 1200

From October 1989, Sunny Truck uses electronic ignition and computerized carburetor. There is NO BALLAST RESISTOR.

Also see: EI Wiring

Coil
BW: unknown. Not needed for old carburetor (non ECU)
BR: Coil + terminal
Distributor
BW: Coil + terminal
L: Coil - terminal