Sounds like it should work. Best if you could test it. Black to the L terminal on th ealternator, red to the R terminal and the R terminal to your alternator/iginition/master switch.
With battery connected and switches closed the LED should stay lit until the alternator starts delivering power.

Finn

paul wrote:

Hi, all.  I just returned from Autozone, where I purchased a package of 3
red LED's meant for automotive use. They came pre-assembled with an inline
resistor that has shrink tubing around it, so I can't tell what colors are
on the resistor. My assumption was that since it is made for automotive use,
it might be OK to use for my alternator warning LED indicator?
      The instructions say to connect the black wire to ground, and the
other wire with the resistor to the 12v source.  Is it possible that  I
stumbled upon something ready-made that will work for me?  You just drill a
7/32 hole in your panel and it snaps into place.  It would be great if this
is what I need.  Any and all comments are of course appreciated.   Paul
Conner, 13b powered SQ2000



  

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