This Siren Mod contains:

-> German City Siren of the VW Passat B7 (All around Germany)
-> German City Siren of the BMW F31 (Most used in North Rhine-Westphalia)
-> German Overland Siren (Most used in Munich)
-> German Firework Siren (All around Germany)

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(ENGLISCH TUTORIAL)
!!! Step 1 to 3 can be skipped if you already used "OpenIV" or "SparkIV" !!!

(1.) Download "OpenIV" or "SparkIV".
(2.) Open one of the programs
(3.) Configure the program like choosing the path etc.

4. Navigate to the following direction 
   GTAIV > pc > audio > Sfx > resident.rpf > RESIDENT
5. Move my file depending which program you use in this direction i told you.
6. Save it !

Use ELS to use all 3 Horns. Watch at YouTube for  "How to install ELS Install"
if you haven't already. After installing ELS you can use all 3 Sirens with the 
Numbers on the Keyboard. "1", "2" and "3"

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(GERMAN TUTORIAL)

Ihr knnt die Schritte 1-3 berspringen wenn ihr bereits "OpenIV" oder "SparkIV"
verwendet habt !

(1.) Downloadet euch einer der beiden Programme
(2.) ffnet eins und whlt wie im Programm angefordert euer GTA Verzeichniss

3. Im Programm navigiert ihr zu: GTAIV > pc > audio > Sfx > resident.rpf > RESIDENT
4. Nun nimmt ihr meine datei und berschreibt sie im Programm !
5. Speichern und das wars :)