I bought a Tekonsha brake controller wire harness off Amazon. So little difference the no names might as well get genuine.
Alternatively, if you can't find name brand, buy and if it won't fit, send it back.
2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6