Does anyone have these two vanilla files?  I have the improved lighting mods installed but with the new vehicles like the interceptor and crown vic with whelen lightbar, there are steady lights on the bar that are on during the nighttime that takes away from the realism.

Members aren't allowed to share or link to sites that contain the vanilla files, as it's considered piracy. to be able to retrieve these you'll need to reinstall your game. 

It's not even a problem of vanilla or not anyway, you just forgot to manually change the values for indicators in the visualsettings.dat. Open the visualsettings.dat with notepad or similar software, press ctrl+F, search for indicator, and once you found them, replace the lines with this:

car.indicator.day.emissive.on    99.00
car.indicator.night.emissive.on    99.00
car.indicator.day.emissive.off    0.30
car.indicator.night.emissive.off    0.003

Magic, amber lights disappeared. It was written by several people in the comment sections of this mod, you should look for it before posting a thread IMO.