2003 Ford F-150 Horn Issues
I replaced the OEM horn on my 2003 F-150 several years ago after the OEM horn stopped working.
I replaced the OEM horn with a Wolo Bad Boy horn and it has worked great for about 4 years. The Wolo horn recently stopped working and I have attempted to replace it with yet another Wolo Bad Boy horn, same exact model. I used the same relay from the previous install.
I connected everything as before and noticed that the horn was loud, but not quite as loud as the previous one. I thought that maybe the relay was not working properly, so I replaced the old relay with the new one that came in the package with the new Wolo Bad Boy horn.
I connected everything and the horn does not work at all. I switched the connections around and cannot get this damn thing to work.
I have confirmed that the relay works using a benchtop power supply and my digital multi-meter.
Furthermore, I have confirmed that the Wolo Bad Boy horn works by connecting it directly to the battery for a few moments.
I connected my digital multi-meter to the terminals on the original horn wires. When I press the horn button on the steering wheel, should this close the circuit and BEEP for continuity? In fact, doesn't my F-150 already have a relay to handle this. I am not really even sure why I need a secondary relay.
Anyway, no beep on my multi-meter. When I switch to voltage or current, I just get zeros. I think that the problem is with my horn button on the steering wheel.
So essentially I now have no horn. Any thoughts? Is this something that I can replace without messing with the airbag? Thanks in advance.