Alot of people including me seem to not know how to make the firetruck use the firetruck siren, but thanks to @Iggy Fresh i've found out how to do it!

 

• First of all go into OpenIV and go to (mods)/x64/audio/sfx/resident and right click the vehicle.awc and export to openformats.
• When you've done this open up Modern siren pack for example and find a firetruck siren like the EQ2B siren. 
• Rename the firetruck wail to ''AMBULANCE_WARNING'' and drag and drop it into the ''vehicles'' folder you got by exporting the vehicles.awc and overwrite the current ''AMBULANCE_WARNING'' Then import the vehicles.oac into OpenIV again.

 

Last step is to edit the ELS VCF files.

• Start of with opening the .XML file and set the ''SrnTone1, 2 and 3'' to false keeping only ''SrnTone 4'' as the only option, which is ''AMBULANCE_WARNING''. 
• Then for the other .XML's set all ''SrnTone's'' to ''true'' leaving only ''AMBULANCE_WARNING'' to ''false''.

 

So when you're done the .XML should looks something like this

Spoiler

Hope this helped, becuse it helped me! And please move this if i posted it in the wrong section. And again thanks @Iggy Fresh for letting me know about this!

I wasn't aware this was a common question, but glad I could help.  And thanks for making this tutorial and sharing it with the community!

This topic has been moved to the appropriate forum. Please post in the correct location in the future.

Does this apply to police as well? I am trying to let my CHP cars use the proper siren, instead of default police.

37 minutes ago, Maxmov said:

Does this apply to police as well? I am trying to let my CHP cars use the proper siren, instead of default police.

Yes.

@Slendis Great! Now I want to know how to use the FBI siren in ELS-V. Or at least in my case to use the CHP siren (wail & yelp) along with the LAPD siren.

Plus, I want the CHP siren is produced regularly from start to finish like it's show when you open the audio file with Windows Media Player or something else.

Edited February 26, 20179 yr by badass22

2 hours ago, badass22 said:

@Slendis Great! Now I want to know how to use the FBI siren in ELS-V. Or at least in my case to use the CHP siren (wail & yelp) along with the LAPD siren.

Plus, I want the CHP siren is produced regularly from start to finish like it's show when you open the audio file with Windows Media Player or something else.

Thats not possible.

@Slendis OK I got it. But at least can I put the CHP siren using the AMBULANCE__WARNING (wail) and POLICE_WARNING (yelp)?

@Maxmov Did you put the CHP siren (wail or yelp?) on AMBULANCE_WARNING? Is the sound produced regularly from start to finish of the audio file track in ELS?

Edited February 26, 20179 yr by badass22

4 hours ago, badass22 said:

OK I got it. But at least can I put the CHP siren using the AMBULANCE__WARNING (wail) and POLICE_WARNING (yelp)?

Yes. But the AMBULANCE_WARNING will not play from the start.

This is only a temporary and very messy fix. Here's to hoping ELS will get an update soon with all the siren tone hashes cracked because I really need them! I also wish there was a way to force the AMBULANCE_WARNING and POLICE_WARNING tones to play from the start!

Edited February 26, 20179 yr by TheHC09