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Need pinout on climate control for 2004 LS400


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Need to know what pin on the LS400 climate control unit provides ground for high speed blower speed.  I've heard that it's #20 and that it's green/orange in color, but I don't see that exact color and I don't know where #20 would be.  Specific help appreciated.  The plugs look like this and it would be the larger one on the left:


ls400 CCU.jpg

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