I'm not exactly sure what you're asking, but you need to attach the relay to the same wire your stock horn was attached to. That's the wire that is connected to the steering wheel that activates the horn. Have you removed your stock horn?
It's not the relay i'm actually looking for. What I'm looking for is where do you attach wire 86 which I'm assuming is actually the control wire.. Where is that attached?
I am trying to install the hella horns(have the harness and bracket) and know pretty much how to do all of it but I don't understand is where do you attach the relay to hook it up to the horn so it connects to the steering wheel horn? Pictures would help.. Thanks