Horn not working now-haha

Gremlins are out now that I have insurance, tags and I want to actually take the Stepvan out of the shop and go for a fun drive.
Horn stopped working. Really don't want to go out without it working so add another thing to the seemingly endless list.
Started testing the horn connections with some jumpers from the battery directly to the horns. There are two horns together to make a 2 note chord.
Upon testing the F note seems to work but the other one is shot.
Looks like I'll have to trace the wires back from the horn button to see if I'm getting power.
Really should get a horn relay and fix the horn button in the steering column but I want to go out and have some fun with this thing so a temporary horn willmhave to do!