YOU CAN RENAME THE MODELS TO (POLICE ; POLICE2 ; POLICE3 ; AMBULANCE ; FIRETRUK) 

RENAMING TO ANY OTHER MODEL SLOT WILL CAUSE ROTATORS TO NOT WORK!!!

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* ELS LIGHTING INSTALLATION *

Place "Caprice.ini" in C:\Program Files (x86)\Rockstar Games\Grand Theft Auto IV\ELS

Then open  "_SLOTCONTROL.ini" and make sure "POLICE" and "POLICE2" looks like this

[ POLICE ]
Status = on
File = Caprice

[ POLICE2 ]
Status = on
File = Caprice

And it's done, enjoy the cars!

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