Button sound trigger? (in addition to horn)

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New member
Feb 20, 2019
I worked my way through the truck file and soundscript docs. Is it true that I can't add custom sounds played via button push, without replacing the horn?

My goal is to mod a firetruck such that it has the air horn AND a Federal Q (mechanical) siren, AND an electronic siren. All of them can be used at the same time, because it seems my previous section-choice solution no longer keeps my kid happy. Yeah, the things you learn when you have a kid. I can probably figure out how to make the sounds but I need a way to START them. In reading the docs, it seems the only button I can use is the single Horn button.

Is this true or am I missing something? Any way to fudge it?
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