Keep checking the instructions. Believe me, finding your own mistakes, if there are any, is mentally challenging. the double check procedure has to be: I know there is a mistake, I have to find it. One instruction sentence at a time. One wire at a time. Follow the diagram from beginning of each wire to end and ubserstand where it goes. Don't gloss over it like "I've seeen this befiore and looks good". If you doulble check and issue is still there, you missed it.
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