55 Fairlane horn issue

[Jim.UT]

Follow up question. I'm reading the shop manual and for continuous horn sounding they recommend looking at the wire plug connection at the base of the steering column (which I haven't found yet) or the horn relay.

Question: is this the horn relay? It is located on the driver side inner fender close to the front of the car. It has a brown wire connected on the far left lug in this photo that looks a lot like the brown wire attached to the horn itself and they both disappear into the same wiring harness.

Now that the day has warmed up, I can't make it fail. I'll play around with it some more tomorrow morning when it's cool.