SOLVED: I installed the Gameconfig.xml mod in addition to having ELS installed. Ingame, press J, K, L, G or 1, 2 and 3 for the sirens.
Hi!
Now this is a bit odd, but I have installed additional add-on cars. They all look fine, but the sirens ingame dont work, which is strange, because I have another add-on whose sirens are working fine.
Could it be the "siren ID" in the .meta and .xml files?
Car that works:
https://www.gta5-mods.com/vehicles/2018-dodge-charger-los-santos-police-department-lspd-lapd-unmarked-add-on-replace-dls-non-els
Cars that ALL don't:
https://www.gta5-mods.com/vehicles/2016-mustang-gt350r-els-addon-replace-template