Help: Silly train horn question

[lts1ow]

Friend of mine is looking to install a train horn kit on one of his customers trucks, and was wondering if there was a way to wire it so that the OE horn switch works, and after a few sec delay of holding down, kicks on train horns.

Thoughts?

 

[duratothemax]

You could probably use something like this...

http://www.elkproducts.com/product-catalog/elk-960-delay-timer-module

 

[lts1ow]

Awesome, thanks man:thumb: