Horn Problem.
Thread Starter
Instructor
Joined: May 2018
Posts: 200
Likes: 25
From: Tennessee
Horn Problem.
When I press the horn it doesn’t make a sound.
Replace the relay, cleaned, sanded, and bench tested the horn and it works. I hear the relay clicking and I’m getting power at the horn wire. The ground for the horn (fender brace) is pretty rusty, but was able to use it as a ground for the multi meter.
Very confused. Help.
Replace the relay, cleaned, sanded, and bench tested the horn and it works. I hear the relay clicking and I’m getting power at the horn wire. The ground for the horn (fender brace) is pretty rusty, but was able to use it as a ground for the multi meter.
Very confused. Help.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
perhaps its a bad ground as a test run a jumper to an an engine ground or the groud strap by the motor mount
Last edited by bobs77vet; May 31, 2018 at 03:58 PM.
Team Owner
Joined: Jun 2001
Posts: 23,363
Likes: 1,059
From: Virginia USA
Very strange. You say you are getting 12v at the horn when pressed? If so your horn should work if the ground is good.
Also might put your meter on amps and put it in series with the horn, in other words put one lead of your meter on the horn wire side and the other lead on the horn connection. This will measure the current draw. Not sure how much current it takes to blow the horn but if it's very low then the horn my not work. Just another suggestion to try.
Also might put your meter on amps and put it in series with the horn, in other words put one lead of your meter on the horn wire side and the other lead on the horn connection. This will measure the current draw. Not sure how much current it takes to blow the horn but if it's very low then the horn my not work. Just another suggestion to try.
Thread Starter
Instructor
Joined: May 2018
Posts: 200
Likes: 25
From: Tennessee
On further investigation, the horn is no good. Was able to test it on the bench, but pulled it out of the car one more time and it didn't make a sound. Got new horns, works great. Thank you to all.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
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Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Team Owner
Joined: Jun 2001
Posts: 23,363
Likes: 1,059
From: Virginia USA
I have a few different power supplies on my bench. One variable 0 to 15 that I built. 1 solid 15V that can put out 3amps max and a 24V that I use to mess around with when I need high amps (it can put out 10amps) that I can regulate down to any voltage I want. Having a power supply on your work bench is invaluable IMO.