This weekend I'm going to be installing a Whelen Air Horn Siren combo on my G, I'm only going to use the air horn though. In order to wire it for hand free usage I need to tap into the horn cable, by any chance would anyone know where i can find the cable short of running a cable from the horn to the siren?

 

THis is the siren for anyone interested!

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The G has a pretty weak horn. This should get peoples attention. I have been thinking of putting on a set of Marchal air horns that are on my shelf. They are much higher note than what you are using.