Documentation

32 Siren Script

Extending GTA5's siren slot limit from 20 up to 32.

By default GTA5 supports up to 20 siren entries per vehicle. The SirenSetting Limit Adjuster is an ASI plugin that raises this cap to 32 sirens and extends siren IDs beyond 255, allowing far more complex emergency lighting setups on a single vehicle.

Installation — FiveM client

1Download the SirenSetting_Limit_Adjuster.asi file.
2Navigate to your FiveM plugins folder: C:\Users\[Your_user]\AppData\Local\FiveM\FiveM.app\plugins
3Place the .asi file in that folder.
4Ensure your server build is no newer than 2699.
5Restart FiveM — the plugin loads automatically on launch.

Developer usage

Once the plugin is installed, you can use siren21 through siren32 in your carcols.meta entries just like the standard siren slots. IDs above 255 are also supported — avoid the reserved values 0, 255, and 65535.

<!-- carcols.meta example using extended siren slots -->
<sirenSettings>
  <siren21>
    <rotation rotationDelta="0" ... />
    <flashiness timeMultiplier="1.0" ... />
    <corona ... />
  </siren21>
  <siren32>
    <!-- additional light definition -->
  </siren32>
</sirenSettings>

There is still a hard limit of 128 total bones on a single vehicle model. Adding extra siren slots does not bypass this — plan your model's bone budget accordingly.

Logging

The plugin generates a SirenSettings.log file each session. It documents every loaded siren setting, which vehicles reference it, and any ID conflicts detected at load time. Check this file first when lights behave unexpectedly.

The ASI works independently of RAGEPluginHook (RPH) but is compatible with the latest RPH version. If you previously installed compatibility DLLs for an older version, they can be safely removed. Emergency lighting RPH plugins (e.g. ELS) may require an update to work with extended siren entries.

Discussion

32 Siren Script

<sirenSettings> <siren21> <rotation rotationDelta="0" ... /> <flashiness timeMultiplier="1.0" ... /> <corona ... /> </siren21> <siren32>  </siren32> </sirenSettings>