I know that editing the visualsettings.dat will make els lights brighter and what not. The thing is, my fbi car's lights are pretty much completely white because the brightness is too high. The brightness level makes my other cars look good, but again, it's too high for my fbi car. It needs to be around 30-40, maybe even less. I don't want to ruin the settings for my other cars, however. Thus, I'm wondering if there's a way to turn edit the light brightness for the fbi car alone.

Any support welcome.

Within the visualsettings.dat file? No.

My only suggestion to you would be darkening the colour of the ELS textures directly, as that may help.