The horn doesn't work. The relay is worming, the horns are working when powered. I removed the center steering wheel and inspected all the parts and they look fine. I can only trace the horn wire (darker yellow) to the steering column from the relay when it is wrapped in all the other wire harness. I do t find that same color wire on the firewall or steering column.

​s there a way to test the current is at the horn ​​​​​ring mechianism at the steering wheel?