I have just downloaded ELS Version 7. I have found that you must be sure to carry the ELS folder into the main Directory aswell as everything else in the rar file. Then I turned my game on and found that the police lights did not work, so I dug a little deeper. I have found that once you open the ELS.Ini, you are given a list of commands to turn sirens and light on. This is what it says:
[ CONTROLS ]
Toggle_LSTG = 74 // J by default
Toggle_SECL = 75 // K by default
Toggle_WRNL = 76 // L by default
Toggle_SRN = 72 // H by default
Toggle_InfoPanel = 77 // M by default **
Toggle_Hazlights = 0 // Nothing/disabled by default **
Toggle_Takedowns = 221 // ] by default
Toggle_Cruise = 219 // [ by default
Chng_Pat_PRML = 85 // U by default *
Chng_Pat_SECL = 73 // I by default *
Chng_Pat_WRNL = 79 // O by default *
Horn_Manu = 84 // T by default
Horn_Airh = 89 // Y by default
FunctionKey = 18 // Alt by default ***
ComboKey = 17 // Ctrl by default
ToggleExpressMode = 8 // Backspace by default **
But I hope this helps you guys, for me you must turn all the lights on by pressing J several times, then hitting H to turn the siren on.