So googling hasn't given me much on this and I've been gone from the GTA V modding scene for far too long to figure it out myself it seems, so question time lol.
I updated my game the other day with the visualsettings.dat from 'Better and BRIGHTER EMERGENCY LIGHTS'. Upon launching the game with this change (and nothing else modified), I noticed that once on duty, only the non-ELS lights of the model (specifically the tail lights, which are the only non-ELS set 'extra' in policeold2.xml under the ELS directory) would actually flash when going Code 3 w/ Siren Mastery. Not even a matter of the 'light' corona's from the lightbars, but the texture change was not happening at all with the ELS models.
Thinking maybe it's just a weird bug with this mod, I then swapped out visualsettings.dat from 'Custom Visuals', still however no success, same issue. I even attempted to install the ELS-specific carcols.ymt modifications from that mod as well, same result.
What's weird though is, when I'm in car selection view upon initiating duty, I -can- see the light textures come on/off if I navigate through the whole lighting selection during vehicle selection, and they do show the visualsettings.dat 'glow' appearance as well.
I ran Albo's troubleshooter for the hell of it, but the only issue it found was a "duplicate DLL" which was irrelevant as it just matched files in my subdirectory I created that stores my mod .zip's and stuff.
Mods -currently- installed;
LSPD:FR (obviously)
LSPDFR+
Arrest Manager
Traffic Policer
PoliceSmartRadio
Assorted Callouts
Siren Mastery
ELS
Custom Visuals
Also some sirens, and RagePluginHook along with it's ASI loaders/hooks. All mods are up to date, freshly installed (with a fresh GTA V install) as of 3-ish days ago, though I can't imagine any of them might be the issue since it literally started right after the visualsettings.dat change.
So did I miss something really simple?