AAW Horn wiring help - Team Camaro Tech
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post #1 of 7 (permalink) Old Dec 6th, 14, 02:32 PM Thread Starter
Ryan
 
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AAW Horn wiring help

So I've finished running my new AAW wiring harness, and all is well except for the horn. From the wiring, looks like the harness uses it's own relay instead of the stock relay. My problem is this: I can hear the relay (AAW under the dash) clicking when I hit the horn button, but no horn. I believe I've isolate the problem--instead of sending 12v from the relay when the horn button is pushed, it's sending 12v via the green horn wire all the time...until I hit the horn button and hear the relay click, which stops the 12v signal. Everything's working with the horn. I've run a test lamp between the horn contact in the steering wheel and steering shaft, which appears to work alright. Relatively new to wiring, so I'm sure I'm missing something. Any ideas?
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post #2 of 7 (permalink) Old Dec 6th, 14, 02:53 PM
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Re: AAW Horn wiring help

Well in the old factory setup the horn relay was the main power bus and it had power all the time, the horn button was the ground to fire the horns off the relay. Sounds like a call to AAW is in order unless someone chimes in with better understanding of the AAW update series.


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post #3 of 7 (permalink) Old Dec 6th, 14, 04:11 PM Thread Starter
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Re: AAW Horn wiring help

Ya that seems to be the case...if I hook up the horns to the factory relay, and ground the horn button tab, the horn sounds. So the relay is looking for ground. The AAW wiring says it puts out 12V, which leads me to using the AAW relay and not the factor relay. I'm still using the factory relay's main power bus bar, though looks like that wasn't needed--could have continued the wire all the way to the factory terminal near the battery, or even all way way to the solenoid. Anyway, sounds like terminal is wired backwards, with it interrupting power instead of providing it--hard to mess that one up though, since it was a pre-crimped harness.
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post #4 of 7 (permalink) Old Dec 6th, 14, 04:49 PM Thread Starter
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Re: AAW Horn wiring help

So my horn switch wire is providing constant ground, gets interrupted when I hit the horn switch. Contact shows 12V on the multimeter, and steering shaft provides ground. Sounds to me like my problem is a ground somewhere inside my steering column, around the cancelling cam, most likely. Anyone in agreement before I rip apart my wheel and column?

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post #5 of 7 (permalink) Old Dec 7th, 14, 11:14 PM Thread Starter
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Re: AAW Horn wiring help

No one?
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post #6 of 7 (permalink) Old Dec 8th, 14, 05:38 AM
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Re: AAW Horn wiring help

It is possible that the update kit expects a digital horn and provides power to it? Your best bet is to call AAW's top notch customer service team first thing this morning and get it sorted out.


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post #7 of 7 (permalink) Old Dec 8th, 14, 05:45 AM
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Re: AAW Horn wiring help

The horn wire from the relay to the horn button is the ground wire for the switch side of the relay.

If the wire is grounded your horn would be honking constantly.

Use a multimeter and see if you have 12v at the green wire that attaches to the horns. You should only have 12v when the horn button is pushed.

If you push the horn button and hear a click then you are probably ok.

Check the horns. Use a jumper to the horn from the battery +. If the horns sound the it's a wiring issues if not. Check to make sure the horns are grounded. You may need to remove paint to get a good ground.

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