It's not a powered antenna. It's a amplified antenna(signal amplification).
Hook it up to the blue/white stripped (power ant) wire or the red- ACC wire on your HU.

 

wait what? What do I hook my blue wire from my Mistu Female harness (wire#3) to?

Other threads said just to run it to the blue/white wire on the Radio Harness and when I ues and amp combine them.

IDK I am confused.

 

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