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914World.com _ 914World Garage _ How do i bench test

Posted by: malcolm2 Apr 17 2016, 08:58 AM

2 wires per horn.

I have a 12v battery. I hook 1 horn up and to BLOWS. Same with the other. Black to black to battery and white to white to battery and they just rumble. NO BLOW. hoq should i test wire? WTF.gif

Posted by: messix Apr 17 2016, 11:56 AM

QUOTE(malcolm2 @ Apr 17 2016, 07:58 AM) *

2 wires per horn.

I have a 12v battery. I hook 1 horn up and to BLOWS. Same with the other. Black to black to battery and white to white to battery and they just rumble. NO BLOW. hoq should i test wire? WTF.gif

weak battery?

Posted by: Rand Apr 17 2016, 02:22 PM

Are you connecting series or parallel? tongue.gif Troy, I just had a funny image of a 12v battery with the amps to power a toy. Tell us about the battery?

Posted by: malcolm2 Apr 17 2016, 02:54 PM

I guess it could be the amps. It is a 12v drill battery.

Posted by: messix Apr 17 2016, 04:06 PM

ok um ya ..... a car horn draws up to about 10 amps


ever notice that the horn circuit has a big fuse?

Posted by: Valy Apr 17 2016, 09:52 PM

QUOTE(malcolm2 @ Apr 17 2016, 01:54 PM) *

I guess it could be the amps. It is a 12v drill battery.

Well.... when I.suspect that the battery is dead I try to blow the horn. This test never fails.
The horn is one of the most power demanding things in the car.

Posted by: malcolm2 Apr 18 2016, 07:42 AM

So today the test moves from the bench to the watercooled VW, close to the bench. I'll use that battery.

Thanks gentlemen.

Posted by: malcolm2 Apr 18 2016, 04:45 PM

That was it. They are plenty LOUD. next time i take my bumper off, the new horns go on.

Posted by: The Cabinetmaker Apr 18 2016, 05:03 PM

If I remember correctly, the horns can be changed thru the fog light openings.

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