I think on the rear of the car the plug junction is near the wishbone control arm, don't quote me though. It's held in the wheel carrier with one hex bolt. I recommend spraying the bolt with PB blaster, and the actual sensor itself where it is bolted in. After all these years, she is sure to be stuck on that wheel carrier pretty good, you may need vice grips pulling the old one out.

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards