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4 pin alternator on 2 pin car?

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britdog

10+ Year Contributor
153
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Jun 27, 2011
tiffin, Ohio
i ordered an alternator from this guy and i need a 2 pin because i have a 1g but hew sent me one from a 2g. will i be able to wire it to my car? and i have been searching it and i cant find a diagram
 
The connectors and mounts are different. The two other wires are to allow the ECU to PWM the output to reduce the load on the engine for emissions and NVH. One line when grounded causes the output to drop to about 12.3v and the other line provides status back to the ECU.

-stevep Elite DSMtalker

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L energises the field coil
S is the sense line for regulation
B is the output

G is the control line to the alternator
FR is the status from the alternator

The first three are shared with the 1G alternator.
 

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To the Op, did you figure out the 2g alternator into the 1g? I just did this but tonight was the first night i drove and when i got back to my exes my cars battery was dead. Therfor the alternator wasnt charging. I hooked it up just like they say when you put the 1g into a 2g. Im so confused. And also i forgot to plug in my ac fan connector, but im sure that didnt matter. Let me know if you figured it out. And nice schematic.
 
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