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Re: Peterbilt 379 Fuse Box locations
Posted to HD/Fleet Forum on 1/26/2015 3 Replies

Hi Josh, You may have a bad switch, I just changed one recently. I don't think there is a separate fuse for washer, I believe it runs off of wiper fuse. I have an older diagram, it is showing circuit 404 as power from switch to pump. Login to read more.

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