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Is this alternator internally or externally regulated?

R

Rtbcoop

New member
Can someone please confirm that this alternator is internally regulated? It looks like a single wire 10si alternator but the back plate looks a little different. Just trying to avoid blowing up my batteries. Thanks!

http://tinypic.com/r/oq8wed/9
http://tinypic.com/r/2dvpzep/9

oq8wed.jpg


2dvpzep.jpg
 
looks like a 10SI to me as well.....but it appears to be 'marinized from the start'. Most of the new items have the spark suppressing cover added over the rear half....
 
That is a Delco 10si that has been Marinized. It will be spark suppression screened at the front also.

These actually require two wires....... one red wire to the charging circuit..... and one black wire for the chassis Negative connection (chassis to engine block).

The internally regulated 10si requires a bump in RPM to initiate the field energizing. It may require a bump to 1,200 rpm.
Once the field has been excited, it will remain excited at all RPM until the next shut down.

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