How to connect after market horn button?

Tiny
AUSTINJR
  • MEMBER
  • 2004 CHEVROLET CAVALIER
  • 2.4L
  • AUTOMATIC
  • 116,228 MILES
I have found my fuse on my car under the left side of the dash. I have 4 wires coming out of it. Two orangeish yellow, one green and one black. Which one is the horn trigger wire?
Saturday, November 22nd, 2025 AT 7:23 PM

4 Replies

Tiny
AL514
  • MECHANIC
  • 5,533 POSTS
Hello, it looks like you have the correct wire coloring, I will post the Horn wiring diagram for you here in a second, but did you find a blown fuse for the Horn (15Amp)?
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Sunday, November 23rd, 2025 AT 9:04 AM
Tiny
AUSTINJR
  • MEMBER
  • 2 POSTS
No my clock spring has a broken spring retention clip and I’m just looking on how to wire an after market button
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Sunday, November 23rd, 2025 AT 9:07 AM
Tiny
AL514
  • MECHANIC
  • 5,533 POSTS
These are the wiring diagrams for the Horn circuit, the 2nd diagram is the oem Chevrolet diagram which the colors match on both, so the first one is accurate as well. Let us know what you find or if you need further help.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester
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Sunday, November 23rd, 2025 AT 9:17 AM
Tiny
AL514
  • MECHANIC
  • 5,533 POSTS
Oh I gotcha, so you can do it a couple different ways, do you need help with coming up with a switch circuit to put in? I can provide a custom diagram for you if you'd like?
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Sunday, November 23rd, 2025 AT 9:19 AM

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