Well I just discovered that neither the horns on my 67 GTO work. I refused to believe this until I painstaking removed both of them and then tested them by running a 12v wire to the horn terminal and touching the horn bracket to the neg. side of the battery. Nothing from either one of them. So if anybody has any horns for a 67 GTO please let me know. I am willing to pay for them. The only thing is they need to be working.