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Join Date: Apr 2006
Location: Houston, TX
Posts: 511
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Mistery Momo horn button - no ground wire.
In the pic, the Porsche button is on the left, Momo supplied button is on the right. On the Porsche button there is a hole (arrow) with a ground symbol and I can see a metal prong in it. If I stuff the ground wire in it it won't stay. Is there a special attachment I should be using.
Thanks. 
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12-25-2006, 08:56 AM
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Join Date: Feb 2006
Location: Simpsonville, SC
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Definitely subscribed. I was just looking at one of my Christmas presents, and it's exactly the same. So what wheel did you get? I got the Competition in 350mm. Can't wait to install it!
Mike
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Mike '84 Grand Prix White RoW Carrera |
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12-25-2006, 09:11 AM
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Montana 911
Join Date: May 2002
Location: Montana
Posts: 5,818
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no the ground wire should attach to a metal ring between the momo adapter and the wheel. The wire around the horn button is then grounded when the button is inserted. The hot lead connects to the tab on the back of the button.
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H.D. Smith 2009 997.2 S 3.8 PDK 2019 Ford Ranger Lariat FX4 Baby Raptor 2019 Can Am Renegade 1000R XC 2020 Yamaha YFZ450R |
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12-25-2006, 09:21 AM
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Just swap the bottom half of the buttons..that's what I did.
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12-25-2006, 09:51 AM
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Do they just snap apart?
Ulrich |
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12-25-2006, 09:53 AM
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Location: Ohio
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Your new one is designed for cars that have the steering shaft and or column grounded to the chassis. The brass spring hoop at the top of it pushes up against the hole in the wheel to make the ground connection. Use a volt meter with continuity tester to see if the steering shaft is a good ground. Or, just touch the hot horn lead to the splined end of the shaft and see if the horn honks. If so, you don't need to worry about a ground lead.
Ron
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1996 993 Coupe, Tiptronic, Polar Silver 1973 914 1.7 Marathon Blue Metallic - Sold 1977 911S Targa - Sahara Diamond Metallic - Sold 1975 911S Targa - Copper Brown Metallic - Sold |
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12-25-2006, 09:56 AM
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Done deal. Thank you guys.
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12-25-2006, 10:17 AM
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So did you install it as it is in the pic, or did you modify/swap the buttons over? I won't get to this today or tomorrow, but plan on doing it this week.
BTW, it looks great! I hope my Competition looks as good as your Monte Carlo! Thanks, Mike
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Mike '84 Grand Prix White RoW Carrera |
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12-25-2006, 12:29 PM
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 This part makes sure the brass thingy stays in contact. |
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12-25-2006, 01:04 PM
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I used a sheet metal screw that tapped itself into the plastic hole and touched the metal ground inside the button to connect the ground wire.
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Free will is doing what we must joyfully. Jung '68 912 Coupe '82 SC sunroof |
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12-25-2006, 01:22 PM
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So did you install it as it is in the pic, or did you modify/swap the buttons over? I won't get to this today or tomorrow, but plan on doing it this week.
I swapped out the horn part to the other backing piece. Ulrich |
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12-25-2006, 03:35 PM
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So how does the horn come apart? I looked at it briefly, but couldn't see how it came apart. WHat am I missing?
I think the brass 'ring' will do the job, but will wait to see when I pull the factory wheel this week. Thanks, Mike
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Mike '84 Grand Prix White RoW Carrera |
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12-25-2006, 03:49 PM
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Mike,
Pop out the part of the horn face that pushes in to honk. I put some tape around the edge not to scratch the rim and inserted a very small flathead screwdriver between the outer rim and the horn button. Then push up and the center portion will pop out. Ulrich |
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12-25-2006, 04:05 PM
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Thanks Ulrich. I'll give it a try!
Mike
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Mike '84 Grand Prix White RoW Carrera Last edited by 911 in SC; 12-25-2006 at 07:25 PM.. |
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12-25-2006, 05:52 PM
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