So, I just installed this on my GTA5 (EPIC) installation.

Researched and wrote down all the keybindings and started testing in game.  Everything else works perfectly.

However when I press 'J' nothing happens.

I double-checked the keys.ini file and confirmed that J is the key binding for Sirens.

I do not have any custom vehicles installed and I am using the police cruisers which come stock with the mod.

 

I have no idea what else to look at to troubleshoot this.

I also cannot find any keybinding for the lights (siren lights I mean - NOT standard vehicle lights)

 

Any help would be appreciated.

Thank you

Your topic has been moved to GTA V Support, this is not LSPDFR related.
Please post in the correct location in the future.

Actually lights in the regular un-modded game work.  It was the sirens and lights of the Police vehicles I was having issues with.