The per-vehicle siren limit is raised from 20 to 32. Vehicles can now have siren1 through siren32, which are all fully functioning and independent. This will fix any "broken" looking light
https://www.lcpdfr.com/downloads/gta5mods/scripts/28560-sirensetting-limit-adjuster/
Any Radiance can work. This radiance edit was made by a community member of Battleborn Roleplay. A radiance that's just right for you! Not too bright, not too dim no matter the time of day!
https://www.lcpdfr.com/downloads/gta5mods/datafile/39974-pinky-radiance/