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I think it has to do with a harmonic balancer that is placed on the frame rail of the Power wagon.
I believe this is the case. Some additional information, in all the post Covid supply chain nonsense, apparently they quit installing the balancers. My 2019 had them, the 2022 does not. I confirmed searching the Mopar parts systems the part number disappears from later builds.I think it has to do with a harmonic balancer that is placed on the frame rail of the Power wagon.
It’s part of the active noise cancellation system. On my current truck it still has the wiring harness plugs under the cab, but the device is not there.What does this balancer do? Thx