My 05 TL low horn went out about a month ago. I went and bought a new one from the dealer. I installed it that same day and it only seems that the high horn is working. No sound from the low horn at all. It look simple enough (plug and play process). I was told to ground it, but if it wasn't ground at first and it work why do I need to ground it now? I decide to ground it today and still nothing. Sounding like a high pitch 4 banger isn't cool. I am wondering if the horn is defective or is there something I am missing?


Thanks in advance

 

^if you wanna come over and check out my horn and the way its set up, you can.
i'll be home at 430ish.

 

Yeah I will hit you up around 5


I am inspecting the wires. Fuses are good. Seems rather odd to me

 

^cool, we can even swap horns to make sure your new one isnt defective.

 

The horn harness is 1 pin (12V when on) and it's grounded through the chassis. Apply battery voltage between the horn harness pin (+) and the metal bracket/mounting bold (-). That will at least tell you if the horn is bad or if it's the circuit.

 

Yeah I researched around and found out the bracket itself helps ground the horn too. I decided to test my old horn for some sort reason and to inspect on how it was assemble and WTF it works. Both horns work now. It seems safe to say the new horn could be defective


Thank you both


Justin I'm hit you up this weekend; besides I want to see how your progress is going.

 

Haha weird. Good luck man, let us know what you find.

 

cool man, come through this weekend. i'll be working on it, its never ending.