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momo steering wheel install - looking for clarification

 
Old 01-11-2003, 11:23 AM
  #1  
marc 1xx1
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Post momo steering wheel install - looking for clarification

I have started the surgery to replace my factory wheel with a new Momo wheel. I have a few questions/observations.

So far we have completed the following:
Wheel removal
1. Disconnect battery (more than 1 hour);
2. Set wheel/tires straight;
3. Loosen airbag from wheel using 30 Torx;
4. Carefully disconnected red connector from airbag (pull 90* plug straight out from the back of the wheel);
5. Mark the top of steering shaft;
6. Unplugged horn;
7. Remove the nut, washer, and ease the wheel off of the shaft (slide the air bag connector through the slot in the wheel);
8. Remove the plastic 'air bag style' trim pieces from the steering column (6 Phillips head screws);
9. Remove the air bag/horn contact/turn signal turn-er off-er module. Mark the top of the contact and the location of the turn signal tab (two phillips head screws);
10. Disconnect the contact wires from the 2 harnesses in the dash, access thru the steering column hole-
a. orange harness - air bag
b. black harness - horn

Removal is complete.

Install
1. Push new horn contact 964 652 104 00 into stalk - does this need to be connected to the old harness or is the stalk still pre-wired for the part?
2. Fit new non air bag plastic trim to column
964 552 273 00-01C and 964 552 275 00 01C
3. Carefully align top of hub with top of column. The new adapter is a much tighter fit than the wheel. Is this common?

The back of the hub has a cast hole and three tapped holes with screws. There is no apparent way to connect the horn to the new non-air bag horn contact on the stalk.

If I recall from doing this with a non-air bag wheel you need to re-use the contact ring and the turn signal switch 'thingy'.

It seems that there should be a metal ring at the back of the adapter to attach the horn kit (horn button, button ring, and wires) to the new non-air bag contact. Am I missing a part(s) or something??

Special thanks to Bill G, Cupcar and Joey B for the conversion part numbers.

Can't wait for spring.

marc <img border="0" alt="[burnout]" title="" src="graemlins/burnout.gif" />

ps Air bag jumper/termination clip 964 952 104 00 still on back order
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Old 01-12-2003, 04:44 PM
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jeff91C2T
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I just did this over the weekend also...might be able to answer a few questions (and I have a few of my own.

I just installed a sparco wheel (with Momo hub). The new horn contact just plugs into the steering colum and makes it's own contact (it's pre-wired). In other words no other conections are needed. Just plug it in and your ready. The momo hub will have two wires, both of which get plugged into the horn button. One wire goes to the hub itself. With the momo hub there's a ring whick should have come with the kit that mounts in between the wheel and hub. If you don't have this, you can attach the wire directly to the hub. The other wire goes from the copper contact that touches the horn contact to the horn button. If it's not working after you hook everthing up (like mine), check for continuity between the hub and horn contact. I made the mistake of pushing it to far in (so no contact).

I've got my wheel installed but I'm not sure what to do with the 928.xxx.xxx jumper plug. Do I just unplug the harness and plug this one in or do I need to swap the existing wires into the jumper plug, and then install??? There are a lot of other connections I'd loose if I just plug it in???
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Old 01-12-2003, 08:02 PM
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John52
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Re: the jumper plug #928.612.220.00 which is located in the centre consule. Behind the panel on the passenger side of the consule you will find the connector and an orange "anti-tamper" seal. Remove the anti-tamper seal and disconnect the harness. The jumper plug 928.612.220.00 simply plugs into the harness. You can't go wrong as it is a male/female connection. Leave the other side of the harness alone (although I did protect mine with electrical tape and secured it with a tie-wrap.
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Old 01-13-2003, 01:59 PM
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jeff91C2T
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Ecxellent...thanks for the info. Just what I needed. I took a few pictures if anybody is interested that I can Email. The upload pic seems to be down at the moment.

Marc...you asked about the plastic trim parts. I had to take some material off in order to clear the momo hub (about 2 mm on both top and bottom).
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Old 01-13-2003, 02:23 PM
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Bill Gregory
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</font><blockquote><font size="1" face="Verdana,Tahoma,Arial,Helvetica,Geneva">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva"><strong>The upload pic seems to be down at the moment.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Upload pics is offline - see the admin note at the top of the forum.
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Old 01-13-2003, 03:57 PM
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Ragin' Bajan
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Hi,
I'm a bit confused as to what parts 964 552 273 00-01C and 964 552 275 00 01C actually are. I was of the impression that roughly the work was 1) disconnect battery 2) remove wheel 3) add on momo hub adaptor with included plastic shroud 4) bolt on momo wheel 5) put in jumper to disable air bag alarms 6) hook up the battery.

But the above two parts seem to be some cosmetic plastic bits. What are they? What did you (jeff91C2T) do, since you said you did the 'straight swap', as I describe above.
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Old 01-13-2003, 04:57 PM
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jeff91C2T
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Ragin...yes, those are the steps I went through. Although you need to remove the existing horn contact and add a new one as mentioned in the very first post. I reused my plasic covers but had to do some "minor" trimming so that the hub wouldn't drag on the plastic.

As soon as the post pics is back up I'll tack on the pictures. It should make more sense with the pic.
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Old 01-13-2003, 11:15 PM
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marc 1xx1
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After some research, it seems that I was sent the wrong hub by mistake. That is why the hub did not have the round horn contact at the base or the turn signal cancel nib. The new hub is on it's way.

With regard to the non-airbag plastic trim pieces, they replace the larger air bag trim covers at the column stalk. It is a cleaner install. This is how the installation is completed on non-airbag C2 as well as non-street 'Andial Cupcar'.

You should not need to trim any plastic off of the trim pieces. The stalk is adjustable (up and down) on the steering shaft; on the underside of either style trim, there is an elongated hole/slot. From the slot you can access a screw head that will allow for adjustment of the stalk and trim.

I hope to have the new hub and the install completed by the weekend, along with an update.

Thanks
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Old 01-16-2003, 10:52 AM
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jeff91C2T
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Here are a few pics:

New horn contact:

<a href="http://boards.rennlist.com/upload/horncontact.jpg" target="_blank">http://boards.rennlist.com/upload/horncontact.jpg</a>

Jumper to disable air bags:

<a href="http://boards.rennlist.com/upload/jumper.jpg" target="_blank">http://boards.rennlist.com/upload/jumper.jpg</a>

And the wheel:

<a href="http://boards.rennlist.com/upload/new_wheel.jpg" target="_blank">http://boards.rennlist.com/upload/new_wheel.jpg</a>
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Old 01-16-2003, 11:17 AM
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joey bagadonuts
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Jeff,

Thanks for the pics. I'm in the middle of my install--forgot to get the horn contact. The pic helps a lot since the only instruction I recall is that "there's only one place for it to go."
<img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />
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Old 01-16-2003, 12:03 PM
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Eric in Chicago
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Just a quick question, What does the horn contact attach to? I have a 993 but I dont think it is that different. I am using the Momo 7004 hub, I am down to the same stage as pictured in Jeff's first picture but what does the L shaped horn contact plug into? I have a couple of orange connectors under the dash I assume that one 2 wire set is for the air bag and the second is for the horn. But the new horn contact would have to have a 2 plug wire comming off of it... Any help?
Momo Usa,Racers Group,Kelly Moss,Midwest Eurosports and a couple of dealers had no idea how to get the horn working on my Momo GT3R wheel
Thanks in advance
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Old 01-16-2003, 01:02 PM
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marc 1xx1
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A quick update.

The new and correct hub (7004) was received last night.

Yes, it has a turn signal canceller;
Yes, there is a horn contact ring bonded to the bottom of the hub;
Yes, it fits onto the (top or smaller) spline of the steering shaft very nicely-no more force fit.
Yes, the air bag jumper/termination plug is still on back order.

I hope to complete the install this weekend.
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Old 01-16-2003, 02:43 PM
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John52
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Re: Eric's question on the horn contact. On the 964 there is a small "slotted hole" at about the one o'clock position on the metal face plate. The horn contact simply press fits into this hole and obviously makes contact with the horn circuitry. It was probably a production feature left over from the original non airbag 964 design.

Does the 993 have this hole?
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Old 01-16-2003, 03:44 PM
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joey bagadonuts
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This is from jeff91c2t's first post above: </font><blockquote><font size="1" face="Verdana,Tahoma,Arial,Helvetica,Geneva">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">The new horn contact just plugs into the steering colum and makes it's own contact (it's pre-wired). In other words no other conections are needed. Just plug it in and your ready.</font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">That answer your question, Eric?
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Old 01-16-2003, 03:52 PM
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Eric in Chicago
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Thanks Guys,
I am going to have to take the wheel off again and look. I dont think I have the sloted hole. I will check it out. On my clock spring (the round donut that fit under the stock had a wire harness comming out the top running to the 2 orange clips under the dash. my guess is one of those 2 sets of wires was the horn control. I will pull the wheel and look for the sloted hole.
Thanks for the response!
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