$210 and an hour or so of your time.
https://www.northridge4x4.com/part/ebrh-accv3-na-redarc-tow-pro-elite-v3-brake-controller?msclkid=0762b8b95a441a33bce4dddc1fc21d91&utm_source=bing&utm_medium=cpc&utm_campaign=NR%20-%20PMAX%20-%20CATCH%20ALL&utm_term=4576304862515842&utm_content=Gladiator%20JT
Doetsch and Fusion both say they work with stock wheels, which are over 6" bs I believe. Rusty's only mentions spacers for non Rubicon models. Anyone able to confirm others?