Alternator wiring

The plug on the alternator has 3 wires, a black, a blue and white and a black and white. I am trying to figure out what each wire goes to. I assume black is ground? Black and white the charging indicator light and blue and white the ignition? Can someone clarify which one does what?

 

I believe everything you could ever want to know about the alternators in these trucks is in the 'big 3' thread: https://www.tundras.com/threads/04-...swap-on-a-00-tundra-the-3-big-upgrades.67222/

 

Since those colors do not show for a Tundra, would this happen to be about your 03 Lexus 470 showing in your profile ?

If so, unless someone here with a Lexus can offer info, the below is a 2003 Lexus GX470 if it helps.



Link to a Lexus Forum if it's about your 03 Lexus 470....

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