I am trying to hook up the original horn button on my steering wheel. The horn is now working properly through a small aftermarket button setup that is mounted to the floor shifter. It has a hot and a ground wire. I've replaced all of the original horn parts in the steering wheel. The original horn button seems to work mechanically. (Pops back after pressing.) The horn has one wire coming from it and goes through the firewall and I am assuming that is the ground that goes to the aftermarket button. The other is hot and is (hot) all the time. I can't find a relay. Is there a connector that connects the original column wire somehow to those two wires now connected to the aftermarket horn button?

Thanks in advance.
Mark