Have the MP808, can see the tow options under Body, Body Controller, ECU Info.
Nothing listed under special functions to change settings.
When you add the factory harness you have to enable the tow options to activate the lights
and brake controller to get the new harness to work.
Older jeeps 2010 and older have options to set under CGW central gateway / Special functions.
Newer jeeps missing under special functions... Unless I'm missing something.