Clock-spring wires which one goes to the horn relay?

Tiny
PRETZEL9872
  • MEMBER
  • 2004 PONTIAC GRAND AM
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 249,500 MILES
My clock spring has 8 wires (not including the airbag wires), and I need to know which one goes to the horn relay so I can connect an aftermarket horn button. I think it's the black wire, but I haven't gotten it to work yet.
Wednesday, January 1st, 2025 AT 8:48 PM

4 Replies

Tiny
PRETZEL9872
  • MEMBER
  • 3 POSTS
Correction: the 8 wires do include the 2 airbag wires, but I know which ones those are.
I'm attaching a picture of the factory clock spring.
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Thursday, January 2nd, 2025 AT 9:20 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
You are correct, it is the black wire which must be grounded. Here is a wiring diagram so you can see how the system works. Check out the images (below). Let us know if you need anything else.
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Thursday, January 2nd, 2025 AT 11:04 AM
Tiny
PRETZEL9872
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  • 3 POSTS
I should have read the diagram more carefully. The clock-spring has nothing to do with the horn. It's the turn signal switch that has the wire. There are three clusters/plugs of wires that go into the turn switch. The correct wire is the black wire in the middle cluster (it's positioned just to the right of the leftmost cluster and connects four wires to the switch).
Thanks for the diagram!
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Thursday, January 2nd, 2025 AT 6:11 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Good to hear, please use 2CarPros anytime we are here to help.
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Friday, January 3rd, 2025 AT 11:38 AM

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