Originally Posted by
ALBUQ F-1
Why not ground the relay terminal that the horn button connects to first, so you can see if it's the button or the relay/horn end? The horn is grounded thru the bracket to the hood, they get rusty, might be worth checking that too.
OP stated there was no horn relay installed.
Originally Posted by
Julies Cool F1
.....
You MUST ensure that not only do they have a good ground, but the ground is substantial enough to pass the current. If they are hood mounted, this includes the hood being grounded enough.
If the gauge wire going to the horns either from the relay (which you MUST install to prevent welding your horn button parts together) !
Just FYI, you need to install a horn relay and you need to check that the horns are properly and adequately grounded. And after that, you need to install a horn relay and make sure the horns are properly and adequately grounded - after installing the horn relay.
But, you can check the actual function of the horns as I described above with the jumper cables in answer to your original question.