Maybe Limited are different. But the DRLs are the low beam headlights. The "signature lighting" is just an accent. If you turn off your DRL, the signature lights still work. It's a separate configuration,.and setting in alfaOBD
Limited and TRX share the same style headlight housings (differnet LED boards and swapped signature light locations)
I think I was mistaken and both are the DRL.
I'm showing mine was set as low beam as DRL, but it also lights up the top brow, if I disable signature lighting it disables the bottom brow but I think the top still shines.
This must be including the low beams themselves.
Last time I touched this was June of 22
Looks like the proper fix for OP is to enable signature lights and disable DRL if he just wants brows running without DRL.
I don't have my truck to test but if an USA Limited the DRL option already shows in UC5 as delectable (Canada Rams are forced on so you need to enable these options first CustSetMenu 1 daytime running lights CSM Present - Yes to make it show in UC5) so just turn DRL off on the head unit and verify that you have the lights you want on.
You headlights will still turn on with auto on the dial when it's dark.
This is the line in Alfaobd, but on a Limited it's already set to yes
Signature Light Present: Yes
If is looking for amber DRL, which on the top is also the signature lighting he would need to change
DRL Lamp Location - Turn Signal DRL
If he doesn't want the bottom white brow with the amber top brow he would set
Signature Light Present: Yes
When headlights are on amber DRL turn off and both brows will be white.