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Old Apr 3, 2020 | 03:16 AM
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Default Horn wire

Troubleshooting my horn. Pretty sure it is the slip ring or yoke thing in the steering wheel, but want to make sure. Which wire in the plug leaving the steering column is the horn? Membrane is good. Honks fine with key fob.
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Old Apr 3, 2020 | 07:58 AM
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What year is the car ???...your profile says you sold the C5 and bought an '88..if it's a C4 I'll move your post over there !!
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Old Apr 3, 2020 | 02:08 PM
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I tried to update my profile 3 times! Won's save the changes.
Car is a 2002.
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Old Apr 3, 2020 | 02:27 PM
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Pictured is the horn wiring for an '02. Sine the horn works with the key FOB we know that the orange colored part of the circuit is good...the horn relay control in the BCM supplies the ground...the yellow area is where you have to concentrate...the black wire is the ground from the control side of the relay...the "NCA" means no color available !!

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Old Apr 3, 2020 | 02:51 PM
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Thanks! There are 3 black wires coming out of the column. I was trying to ground the correct one to honk the horn.
I think I was finally able to change my profile, too!
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Old Apr 4, 2020 | 03:03 AM
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Do you have anything showing which black wire in the connector is the horn? I see the letter "v" there, but don't tell me much. Two of the black wires are smaller than the other. I'm thinking the larger, more common sized wire is the horn ground, but guessing....
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