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NedHan79
Hockenheim
Joined: 08 Nov 2018
Posts: 668
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 Posted: Sat Jan 05, 2019 6:10 pm Post subject: Omp steering wheel boss
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I’ve just bought a nice omp steering wheel. 3 spoke, dished suade wheel. The big question is where can I get a boss to suit? I’ve seen 1 on eBay with the resistor to put out the air bag light but i think it’s very pricey at £135. There are other options at half the price.
Has anyone went this route?
Is it simply a matter of buying the version that states it’s only for non air bag models and sorting the resistor myself?
Or is there anything else involved?
As usual, all help welcome
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MisterCorn
Dijon
Joined: 08 Jan 2011
Posts: 7308
Location: Nottingham, England
2004 Porsche 996 Turbo
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| Posted: Sat Jan 05, 2019 6:20 pm Post subject:
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I got one from the US which correctly passes the cables through. I'll get details on Monday if I remember.
MC
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NedHan79
Hockenheim
Joined: 08 Nov 2018
Posts: 668
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| Posted: Sat Jan 05, 2019 6:26 pm Post subject:
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I’d really appreciate that mistercorn. Did you just sort your own resistor?
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Marky911
Magny-Cours
Joined: 04 Jun 2009
Posts: 2657
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NedHan79
Hockenheim
Joined: 08 Nov 2018
Posts: 668
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| Posted: Tue Jan 08, 2019 6:26 am Post subject:
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Thanks mark. Which boss did you use? I don’t really know what I need as mister corn has mentioned one that passes the cable through.
Just started reading your thread last night. Only about 5 pages in but there’s a lot of very useful information on it.
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MisterCorn
Dijon
Joined: 08 Jan 2011
Posts: 7308
Location: Nottingham, England
2004 Porsche 996 Turbo
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| Posted: Tue Jan 08, 2019 6:40 am Post subject:
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It is made by NRG, example here.
https://www.andysautosport.com/hub_adapter/porsche_996.html
If you are using a non-airbag wheel you will need to fit the resistor, but this will correctly fit the prongs on your spiral cable connector amd has the hole in the right place to pass through the wires so that your horn push will also work.
MC
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NedHan79
Hockenheim
Joined: 08 Nov 2018
Posts: 668
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| Posted: Tue Jan 08, 2019 6:52 am Post subject:
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Thanks for that. Will the omp boss do as well or is the nrg boss perfect for me?
And do I simply just need the resistor after this?
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Marky911
Magny-Cours
Joined: 04 Jun 2009
Posts: 2657
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| Posted: Tue Jan 08, 2019 6:58 am Post subject:
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Thanks Ned,
I went for the Momo wheel so I wouldn't want to advise on the OMP.
Mistercorn knows his onions so stick with him and you won't go far wrong.
I cover the wheel fitting on about page 13 or 14 of my thread. I also link a couple of useful guides from other people. It doesn't cover everything but you can fill in the gaps fairly easily. 
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NedHan79
Hockenheim
Joined: 08 Nov 2018
Posts: 668
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| Posted: Tue Jan 08, 2019 7:24 am Post subject:
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Thanks guys. I had been emailing Bella Volante and they’re quoting £120-125 iirc so might just go that way.i think by the time you pay for shipping and duty there’s not much to be saved plus dealing with a uk based crowd with a good reputation gives some peace of mind
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MisterCorn
Dijon
Joined: 08 Jan 2011
Posts: 7308
Location: Nottingham, England
2004 Porsche 996 Turbo
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| Posted: Tue Jan 08, 2019 7:29 am Post subject:
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The thing to be careful of is to make sure that whatever boss you get has the two holes for the prongs and the slot for the cable. Without these it can fit on the spline perfectly but it will make it awkward to get the cable through for the horn without it spiralling around the column and you will lose the indicator cancelling. You can see the holes I mean in one of these photos. I'm running mine with a Works Bell quick release which is mounted on the first two pictures.
The 997 has a different size spline, and the two prongs and cable hole are in different places. So if you get a 997 boss it won't work even with a suitable adapter for the splines (guess how I found that out....)
MC
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NedHan79
Hockenheim
Joined: 08 Nov 2018
Posts: 668
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| Posted: Tue Jan 08, 2019 10:13 am Post subject:
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Thanks for that. I’ll be sure to ask the questions.
They have also quoted me £35 for the horn centre with the Porsche crest so I might as well bite the bullet and get them both.
I’ve other bits bought for the car but I’ll leave a lot of it until I’m in better shape.
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rdodger
Monza
Joined: 08 Apr 2018
Posts: 191
Location: Cheshire
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| Posted: Tue Jan 08, 2019 10:26 am Post subject:
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Does this boss do away with the potential issues others have faced with the horn etc?
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NedHan79
Hockenheim
Joined: 08 Nov 2018
Posts: 668
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| Posted: Tue Jan 08, 2019 10:28 am Post subject:
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I didn’t realise that there was any issues. I’ve always just fancied the omp wheel. Bought 1 for my last car but couldn’t get the boss to suit
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wasz
Sepang
Joined: 28 Dec 2012
Posts: 2998
1999 Porsche 996 Carrera 2
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| Posted: Tue Jan 08, 2019 11:50 am Post subject:
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| rdodger wrote: | | Does this boss do away with the potential issues others have faced with the horn etc? |
Before spending any money, whip your airbag off (disconnect battery for a while first) and use a multimeter check for ground on the steering column.
Aftermarket bosses ground the horn through the column, and some early cars have a poor ground.
I never looked at how the OE wheel grounds, but that is my understanding others may know more (e.g. dammit had a lot of trouble getting his working).
_________________
My special order MY99 Vesuvious Charcoal 996 | Clutch, Fly RMS IMS AOS Job |
Steering Rack Hard Lines | Air Con Compressor / System
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MisterCorn
Dijon
Joined: 08 Jan 2011
Posts: 7308
Location: Nottingham, England
2004 Porsche 996 Turbo
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| Posted: Tue Jan 08, 2019 12:58 pm Post subject:
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With an aftermarket like the one I linked to it uses all of the original wiring, so it doesn't ground through the column. That is why it is a good one to use.
MC
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NedHan79
Hockenheim
Joined: 08 Nov 2018
Posts: 668
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| Posted: Tue Jan 08, 2019 1:08 pm Post subject:
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Would it not be a simple job of running a ground wire up through the cowling?
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MisterCorn
Dijon
Joined: 08 Jan 2011
Posts: 7308
Location: Nottingham, England
2004 Porsche 996 Turbo
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| Posted: Tue Jan 08, 2019 1:18 pm Post subject:
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| NedHan79 wrote: | | Would it not be a simple job of running a ground wire up through the cowling? |
It would be if you didn't turn your steering wheel.
MC
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NedHan79
Hockenheim
Joined: 08 Nov 2018
Posts: 668
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| Posted: Tue Jan 08, 2019 1:22 pm Post subject:
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Fair point
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Sundayjumper
Spa-Francorchamps
Joined: 17 Mar 2009
Posts: 300
Location: Royal Berkshire
1999 Porsche 996 Carrera 2
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| Posted: Tue Jan 08, 2019 10:54 pm Post subject:
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| wasz wrote: | Before spending any money, whip your airbag off (disconnect battery for a while first) and use a multimeter check for ground on the steering column.
Aftermarket bosses ground the horn through the column, and some early cars have a poor ground.
I never looked at how the OE wheel grounds, but that is my understanding others may know more (e.g. dammit had a lot of trouble getting his working). |
I'm still somewhat baffled why this is is an issue. I've done three wheels now with the Momo boss and the horn is not an issue, even Stotty's car where his Tuna had spent (IIRC) four hours trying to make it work and failed.
If you're anywhere near Sandhurst, Berkshire, bring it over and I'll do it. I've done Stotty & knw911's cars as well as my own.
http://www.911uk.com/viewtopic.php?t=130140&postdays=0&postorder=asc&start=0
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Marky911
Magny-Cours
Joined: 04 Jun 2009
Posts: 2657
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| Posted: Wed Jan 09, 2019 9:29 am Post subject:
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Why not pop a "how to" up SJ so people can sort it if they encounter those issues?
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![Porsche 911 [992]](./images/models/Model-992.gif)
![Porsche 911 [991]](./images/models/Model-991.gif)
![Porsche 911 [997]](./images/models/Model-997.gif)
![Porsche 911 [GT]](./images/models/Model-GT.png)
![Porsche 911 [996]](./images/models/Model-996.gif)
![Porsche 911 [993]](./images/models/Model-993.gif)
![Porsche 911 [RS]](./images/models/Model-RS.gif)
![Porsche 911 [964]](./images/models/Model-964.gif)
![Porsche 911 [Early]](./images/models/Model-Early.gif)
