Horn Wiring diagrams

[Chappers]

Hi all, I tried searching but couldn't find much but doesn't anyone know where I can get access to wiring diagrams?

I'm looking to see if there's a way to add the low tone horn in the engine bay intercepting the horn signal without having to remove the bumper.

I may have a look around the engine to see if I can trace it back and make a write up but any info would be great

Thanks

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