Whhheeeeeeeee

[truckR]

Brand new hu and it worked fine at first, then I added another amp for the subs only. Now I get Whhheeee wwwhheeeeee wwhhheeee all day long. I used another hu from a friend and it worked fine. It is a pioneer 350 out the box. Is there any thing I can do before I return it. I hate doing that.

There is not bad wiring, o ground problems, cause I checked and also switched out the hu and the other one worked fine.

Thanks for the help

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