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Seems I have a attention getter

 
Old 06-11-2019, 09:31 PM
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l82vett
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Default Seems I have a attention getter

Wife took the 80 to a cruise in tonight and as she turned in the horn started blowing . It only does it as the steering wheel is being turned . The car has a telescoping and tilt wheel. Evidently there is a wire some where touching and grounding out to make the horn blow. Anyone had this problem for info on where or what wire to look at to fix this latest problem?
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Old 06-12-2019, 12:39 AM
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I've had this problem, but my horn was broken so I didn't hear it. Could be the plastic cylinder that holds the spring loaded ground, or the plastic "ring". Its been a while since I've been into my steering column.


Here is the plastic ring:



Here is the spring loaded ground pin thing.
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Old 06-12-2019, 08:26 AM
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KenSny
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Same thing happened to a friend of mine 2 years ago.
Biggest PITA is getting it apart to replace it.
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Old 06-12-2019, 03:48 PM
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It just happened here on my 76 after I had the steering box replaced with a Borgeson unit. It was fine for a couple of days. Then the OL and I left for a little cruise, and each time I turned the wheel, the horn went off. All the neighbors were looking and waving, and I was trying to figure out WTF? I pulled into the middle school parking lot and disconnected the horn wires. I would really like the horn back, but I'm not ready to tear into the steering column and screw that all up. I'm sure there is a wire shorting out in there somewhere. At some point when I get a few bucks, I may replace the Vega steering wheel with a real Corvette one and address the horn issue.
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Old 06-12-2019, 09:39 PM
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Originally Posted by Whoisjohngalt View Post
It just happened here on my 76 after I had the steering box replaced with a Borgeson unit. It was fine for a couple of days. Then the OL and I left for a little cruise, and each time I turned the wheel, the horn went off. All the neighbors were looking and waving, and I was trying to figure out WTF? I pulled into the middle school parking lot and disconnected the horn wires. I would really like the horn back, but I'm not ready to tear into the steering column and screw that all up. I'm sure there is a wire shorting out in there somewhere. At some point when I get a few bucks, I may replace the Vega steering wheel with a real Corvette one and address the horn issue.
Don't leave it with the horns disconnected because if the relay gets a ground signal it will be on after you park your Corvette and either the relay will go bad or your battery will drain down.
Disconnect the BLACK wire at 'G' on the harmonica connection until you have time to get into the steering column.
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Old 06-12-2019, 09:49 PM
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Thanks Peterbuilt, Now, if you don't mind helping a mechanically challenged owner, where is the "G" on the .harmonica connection located. What do they look like? Are they down there by the horns? Do I just follow the wires to it?
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Old 06-12-2019, 10:15 PM
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After reading a little bit, it looks like the harmonica is located in the steering column. Is the relay to which you referred more accessible without having to tear into the steering column now. I followed the wires in the harness until they disappeared into the firewall and up into the steering column. Not something I want to get into right now. Damn.
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Old 06-12-2019, 10:56 PM
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You will find the harmonica connection at the end of the turn signal switch.
It comes out of the bottom of the steering column.



After you disconnect the two halves remove the wire at 'G' with a small screwdriver and put the connection back together.



Shown is a different switch connector but that's how to remove the wire.
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Old 06-13-2019, 10:25 AM
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l82vett
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Is the harmonica connection inside the car or below the brake booster?
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Old 06-13-2019, 10:44 AM
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Inside the cabin, clipped to the column.
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Old 06-13-2019, 01:57 PM
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l82vett
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Found the Harmonica, unplugged it and removed the G wire. Connection not exactly like the illustration above. On my 80 the connector holding clips are on the sides. Now the horn doesn't blow but I need a chiropractor. Thanks for the info guys
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Old 06-13-2019, 04:23 PM
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l82vett
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Well as I stated above the horn is not blowing now but I must have disturbed another wire. Now the turn signals don't work. What is the letter in the harmonic plug for the turn signals?
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Old 06-13-2019, 06:14 PM
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l82vett
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Found the wiring letter code for the harmonica connection, Google is your friend .
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Old 06-13-2019, 10:20 PM
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l82vett
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Went under the dash again, unplugged the harmonica connection checked the wires, everything looked OK . plugged it back up and the turn signals work. Must not have had it completely seated . I put a zip tie around it to make sure it was tight.
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Old 06-14-2019, 08:32 AM
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Sounds like you're getting there. Good Luck with the horn. I'm going to be troubleshooting mine today. Here's a link to Mr Shea's paper on horn diagnosis if you haven't seen it yet.

http://jimshea.corvettefaq.com/wp-co...v27OC20102.pdf
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