I saw some topics on here regarding horns, but nothing was answering my questions. I hooked up a horn to my 67 firebird and I had power to the wire that connected to the horn, horn worked when the horn button was pushed.
The next day, horn didn't work, but I could hear the (Horn relay?) on the grill next to the voltage regulator clicking as I push the horn button. Pulled some fuses, wiggled some wires and turned the car on and then it worked again.
Today, horn not working. Horn relay is clicking again. and the black wire that connects to the horn isn't getting any voltage to it. I have to have this fixed by tomorrow night for a state patrol safety inspection on Wednesday morning. Thanks in advance for your responses.
Most likely it's the relay when they click. If there were no clicking and you had power at the horn when the button was pressed, you'd need to take a screwdriver handle and give the horns a whack to free up the diaphram inside. BUT, if you are not getting power to the horn, and if it's NOT the wiring leading to the relay, then the relay is toast. Use a tester to see if there is power going into the leads on the relay while someone holds to button down. If there is power going in, and nothing coming out, toast.
Check to see if you have 12v at the relay output to the horns when you push the horn button. If you have the 12v then it's the wiring to the horn. Sounds like the wiring to the horn to me.
Anytime I've ever had a situation where the relay clicked when the horn button was pressed, it was a bad relay. The clicking in the relay tells you that the power is getting to the relay. It also tells you that the power is not leaving the relay. You can use a screwdriver handle to give the relay a good tap or two while someone else presses the horn button.
