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Horn works only on one side

Tiny
REDGOAT67
  • MEMBER
  • 1967 PONTIAC GTO
  • 118,000 MILES
My steering wheel has two horn buttons one on each of the wheel's spokes. One side will sound the horn the other side will not. After taking apart the inoperable side, I can see that the button clearly makes contact but the horn will not sound. Do I need a new horn relay?... Or is the problem something else?
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Thursday, September 29th, 2011 AT 2:17 AM

7 Replies

Tiny
PROAUTOTECH
  • MECHANIC
  • 288 POSTS
Without knowing that steering wheel, I would assume that both horn buttons use the same relay. I would think that they tie in together before the relay, look into that.
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Thursday, September 29th, 2011 AT 2:26 AM
Tiny
REDGOAT67
  • MEMBER
  • 8 POSTS
I cleaned the contacts and the horn worked fine on both buttons on the steering wheel. That was a year ago. Today, the horn stopped working again. I get an audible click in the engine compartment near the firewall whenever I press the horn button but no horn sounds. Do I need a new relay? If so where is it located. Or should I try something else first?
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Monday, September 17th, 2012 AT 1:30 AM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Run a wire from the battery to the horn. Does it sound?
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Monday, September 17th, 2012 AT 1:58 AM
Tiny
REDGOAT67
  • MEMBER
  • 8 POSTS
Yes. It sounded when I ran a wire from the positive battery terminal to the horn.
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Monday, September 17th, 2012 AT 2:43 AM
Tiny
REDGOAT67
  • MEMBER
  • 8 POSTS
So now I removed the horn relay switch and there is no click when I push the horn button. Before I spend $50 for an exact GM replacement I would like to test this old one to verify that it is indeed defective. I have a multimeter. What steps do I follow to test it. I should note that this GM relay is called a "littlefuse" horn relay. Also I have photo image of my relay.
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Tuesday, September 18th, 2012 AT 1:18 AM
Tiny
REDGOAT67
  • MEMBER
  • 8 POSTS
Problem solved. All I had to do was remove some tarnish on the 45-year-old horn relay terminals. Works fine now.
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+1
Tuesday, September 18th, 2012 AT 9:51 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Good troubleshooting gl.
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Wednesday, September 19th, 2012 AT 10:09 PM

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