Factory horn wire color?

[mitchdog7]

Hi, i'm in the process of putting my train horns on my new truck, and i'm wondering which color wire is the trigger for the factory horn? And where is it located? Also, just to make sure, it is negative polarity correct? I searched around and can't find which wire it is on a 7.3L... Thanks for any info, Mitch.

[charlie-2]

here you go... hope it helps, what type of train horns ya got?

train horn wiring - Ford Truck Enthusiasts Forums

[mitchdog7]

haha, Thats somewhat ironic.. The person who posted that thread is actually my cousin. I asked him yesterday about it and he said that he wasn't sure if the wiring is the same between the 6.0 and the 7.3. I just got the cheapo ebay special. works good enough for my very tight budget. I think i'll give that wire a try anyways. And, is that under the dash fuse panel, or under the hood? i didn't read anything about that, but it looks under the dash? Thanks a lot for the info.