I replaced my wire last year. Going under the slide is stupid and that's what caused the wire to fail the first time. Don't do that.
I routed mine directly down the wall from the rear motor drilling into the exterior cabinet below, then along the top of the back exterior cabinet and through the light box into the next cabinet where the motor controller is mounted. This seems a much better routing and nothing should ever move near the cable. Mine is a 2014, so I don't know if your controller box is in the same place... but this made sense to me and has worked for ~18 months.
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