I ended up just installing some after market seat heaters in the rear seats like $60-70 a piece … put the switches for them in the center console , beside the rear USB ports… looks factory… only thing it does not do is the switches do not light up at night… Installation was a “process” but took it slow taking the seat covers off and on.. Right rear seat was a larger pain then the left, due to it being attached to the center console/middle seat….getting the piping reattached to the cushion was probably the biggest pain… (factory used hog rings, I redid it with some nice zip ties )took me about 2 days to do both, but I also sound dampened the whole back area with everything out…. Going factory required a different harness for the front center console, and I seem to think even a different body harness to get the power/signal to the back seats/controllers… not worth it in my opinion for the little it will get used…..nobody sitting in the back seat is going to care that the rear seat heat is not”factory”
seats are just as warm as the factory ones…