J
joe paco
Guest
the thumb buttons on my '91 were intermittent, would work for a while, then fail. I used a thin putty knife, gently pried the buttons towards the center to release the little feet, shown, then pulled it to release the long side. (got that idea on CAC somewhere, maybe Hib. Haynes Manual does not cover this type of horn)
the copper coated steel contacts are designed to spring back after being pressed, to break ground - the oil can affect. my understanding is that the buttons simply ground the relay. the contacts were floating out of location in their little "picture frames" I guess. noticed the horn started working once when the wheel was turned hard.
one pic shows one contact removed to show grounding pin. I reassembled, put some clear tape over them to secure to their positions (tape on a Corvette? whatever works, especially if hidden.) used alum tape on one side, since it has more glue.
reinstall buttons with long side first, wiggle into position to lock feet, or you'll be ordering a new one.
the fix is probably not permanent, but so far, two days, dozens of times, horns work. sure beats removing air bag, as earlier models require. unplug horns while working, unles your nerves are better than mine.
I will say that the horn design is meant to fail. Sure not six sigma! For the amount of use/abuse they get, they should last at least 100 years.
joe