MoMo RS wheel install. NEW PICS AND QUESTIONS!
#1
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MoMo RS wheel install. NEW PICS AND QUESTIONS!
(yes, again)
I know there are a lot of really good threads on this but for some reason I am just unable to understand the directions. (terminology or my ignorance to blame)
I have the airbag bypass.
I have the horn part that inserts into the steering column to complete a connection to the adapter.
I have the RS MoMo steering wheel
I have the MoMo 7004 Hub Adapter
-And the car....got that too.
What I dont have is a clue on what gets cut or bypassed. After reading all the threads on this, am I to believe the airbag plug is to remain tucked in the dash? (Bridged in the center console, apparently)
Can anyone give me a hand? In "special" terms, tell me what goes to where?
(Example: "E to G", F to H".)
Thanks a TON!
Link to image to zoom in:
http://i304.photobucket.com/albums/n...aTorin/hub.jpg
I know there are a lot of really good threads on this but for some reason I am just unable to understand the directions. (terminology or my ignorance to blame)
I have the airbag bypass.
I have the horn part that inserts into the steering column to complete a connection to the adapter.
I have the RS MoMo steering wheel
I have the MoMo 7004 Hub Adapter
-And the car....got that too.
What I dont have is a clue on what gets cut or bypassed. After reading all the threads on this, am I to believe the airbag plug is to remain tucked in the dash? (Bridged in the center console, apparently)
Can anyone give me a hand? In "special" terms, tell me what goes to where?
(Example: "E to G", F to H".)
Thanks a TON!
Link to image to zoom in:
http://i304.photobucket.com/albums/n...aTorin/hub.jpg
Last edited by Resident Sicko; 02-02-2011 at 09:52 AM. Reason: update
#4
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I just installed a Momo steering wheel over Christmas. The information I used was contained in two threads that were very helpful. https://rennlist.com/forums/993-foru...pressions.html and https://rennlist.com/forums/993-foru...-long-dyi.html. If I remember correctly, the red connector (wires C and D in you picture) is for the airbag and the orange connector (wires A and B) is for the horn.
The airbag sensor replacement plugs into the red connector. I made my own airbag sensor by using the mating female red connector that normally goes to the airbag in the steering wheel. I cut this off and soldered a 3 ohm resistor to the two wires in this connector. This connector is then plugged back in to the red connector in your picture (wires C and D). It doesn't matter which wire (C or D) goes where as the airbag bypass is a simple resistive element that doesn't have any electrical polarity. After plugging the airbag sensor connector back together, this can be tucked back into the dash pretty much anywhere the wires reach.
To get the horn working you need the Porsche part # 964 652 104 00 (horn contact or something like that) as mentioned (and pictured) in the aforementioned threads. This completes the connection from the horn button through the Momo steering wheel hub to the horn. The horn contact has a copper connector that sticks into the hole when it gets installed. A wire from this contact is run to either wire A or B I can't tell which from your picture. I went to an electronics store and bought a female connecter that fit the male connecter from the L shaped horn contact. I soldered a wire to this female connector and ran that to the wire in the orange connector. One of the threads says it is the brown/white wire but it should be the wire with a positive voltage on it which you can measure with a voltmeter. The other wire in that connector must be connected to chassis ground. I had a difficult time finding a good ground up by the steering column so I ran a longer wire down behind the dash to the the center console where it was easier to get a good ground connection. But it doesn't matter, you just need to connect this wire to ground.
The horn button contacts can be connected to either wire from the Momo steering wheel hub (wire E and F). Wire F connects to a copper contact ring on the bottom of the Momo hub to the L shaped horn contact part that must be added. Wire E connects to chassis ground through the Momo hub to the steering column to ground. You can connect either of these wires to either connector on the horn button. The horn button is just a simple switch and doesn't have any electrical polarity.
Hope this is clear. Good luck with the installation!
The airbag sensor replacement plugs into the red connector. I made my own airbag sensor by using the mating female red connector that normally goes to the airbag in the steering wheel. I cut this off and soldered a 3 ohm resistor to the two wires in this connector. This connector is then plugged back in to the red connector in your picture (wires C and D). It doesn't matter which wire (C or D) goes where as the airbag bypass is a simple resistive element that doesn't have any electrical polarity. After plugging the airbag sensor connector back together, this can be tucked back into the dash pretty much anywhere the wires reach.
To get the horn working you need the Porsche part # 964 652 104 00 (horn contact or something like that) as mentioned (and pictured) in the aforementioned threads. This completes the connection from the horn button through the Momo steering wheel hub to the horn. The horn contact has a copper connector that sticks into the hole when it gets installed. A wire from this contact is run to either wire A or B I can't tell which from your picture. I went to an electronics store and bought a female connecter that fit the male connecter from the L shaped horn contact. I soldered a wire to this female connector and ran that to the wire in the orange connector. One of the threads says it is the brown/white wire but it should be the wire with a positive voltage on it which you can measure with a voltmeter. The other wire in that connector must be connected to chassis ground. I had a difficult time finding a good ground up by the steering column so I ran a longer wire down behind the dash to the the center console where it was easier to get a good ground connection. But it doesn't matter, you just need to connect this wire to ground.
The horn button contacts can be connected to either wire from the Momo steering wheel hub (wire E and F). Wire F connects to a copper contact ring on the bottom of the Momo hub to the L shaped horn contact part that must be added. Wire E connects to chassis ground through the Momo hub to the steering column to ground. You can connect either of these wires to either connector on the horn button. The horn button is just a simple switch and doesn't have any electrical polarity.
Hope this is clear. Good luck with the installation!
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#11
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Thread Starter
In the way to Chimney rock..right off the Blue Ridge Parkway. I made someone motion sick in the car on this trip...
Okay back on topic,
The red connector has 1 x brown, 1 x brown/white wire
Orange connector has 1 x green/blue, 1 x green/red
Instinct is telling me the BROWN is horn, and GREEN is airbag but not as I have been advised. Can anyone confirm?
Also of note, the airbag bypass part I picked up from another post (p/n 964.612.220.00) is nothing more than a double male ended wire looped inside a big black connector. Isn't this where the "3 ohm resistor" should be?
Okay back on topic,
The red connector has 1 x brown, 1 x brown/white wire
Orange connector has 1 x green/blue, 1 x green/red
Instinct is telling me the BROWN is horn, and GREEN is airbag but not as I have been advised. Can anyone confirm?
Also of note, the airbag bypass part I picked up from another post (p/n 964.612.220.00) is nothing more than a double male ended wire looped inside a big black connector. Isn't this where the "3 ohm resistor" should be?
#12
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Thread Starter
Okay. Thanks to all those who have helped. Eric, it was good chatting with you.
Horn: sounds when ignition is turned on. Pulled one wire from the horn botton, pulled the other, swapped and still horn sounds when ignition is on.
Followed directions, grounded green/blue wire to chassis, connected green/red to horn contact (P/N 964 652 104 00). Could I have them reversed?
Airbag disable: I could not locate a 3 ohm 1/4 watt resistor, so ended up using 3 x 10 ohm soldered side by side. (in-line would have produced 30 ohm, so I am told. Calculations produce 2.8 ohm...
basically "looped" the brown wire to the brown/white with resistors in between.
So please someone explain how I have screwed this up.
Horn: sounds when ignition is turned on. Pulled one wire from the horn botton, pulled the other, swapped and still horn sounds when ignition is on.
Followed directions, grounded green/blue wire to chassis, connected green/red to horn contact (P/N 964 652 104 00). Could I have them reversed?
Airbag disable: I could not locate a 3 ohm 1/4 watt resistor, so ended up using 3 x 10 ohm soldered side by side. (in-line would have produced 30 ohm, so I am told. Calculations produce 2.8 ohm...
basically "looped" the brown wire to the brown/white with resistors in between.
So please someone explain how I have screwed this up.
#13
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Horn: sounds when ignition is turned on. Pulled one wire from the horn botton, pulled the other, swapped and still horn sounds when ignition is on.
Followed directions, grounded green/blue wire to chassis, connected green/red to horn contact (P/N 964 652 104 00). Could I have them reversed?
Airbag disable: I could not locate a 3 ohm 1/4 watt resistor, so ended up using 3 x 10 ohm soldered side by side. (in-line would have produced 30 ohm, so I am told. Calculations produce 2.8 ohm...
basically "looped" the brown wire to the brown/white with resistors in between.
So please someone explain how I have screwed this up.
Followed directions, grounded green/blue wire to chassis, connected green/red to horn contact (P/N 964 652 104 00). Could I have them reversed?
Airbag disable: I could not locate a 3 ohm 1/4 watt resistor, so ended up using 3 x 10 ohm soldered side by side. (in-line would have produced 30 ohm, so I am told. Calculations produce 2.8 ohm...
basically "looped" the brown wire to the brown/white with resistors in between.
So please someone explain how I have screwed this up.
Airbag disable: With the three 10 ohm resistors in parallel you've created an effective resistance of 3.3 ohms. The actual resistance that you might measure with an ohm-meter is probably a little different as each of the resistors is probably not exactly 10 ohms. This is fine I believe. When I was reading threads on how people were solving this problem I saw that they used anything from 2.7 ohms to 3.3 ohms or so. I doubt that it is too critical. I believe if this resistance isn't right you'll get an airbag warning light, so I think you've got this part of it solved.
#14
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Thread Starter
Yes, horn sounds when ignition is turned on with both wires disconnected from the horn button.
I removed the steering wheel and metal ring with male lead from assy, horn still sounds. disconnected "ground" horn still sounds. Plugged in wire from adapter to each of the male ends on horn button, with and without ground connected and horn still sounds.
Q: Could the "Porsche Drive Block" be a lending factor?
Q: Must the battery terminal to the post be tightened, or just enough to power the car?
Q: Could I have the OE wires mixed up? Red connector/brown wires vs Orange connector/green wires?
I don't have a voltage meter. Maybe that is the next step unless something turns up as a solution.
I removed the steering wheel and metal ring with male lead from assy, horn still sounds. disconnected "ground" horn still sounds. Plugged in wire from adapter to each of the male ends on horn button, with and without ground connected and horn still sounds.
Q: Could the "Porsche Drive Block" be a lending factor?
Q: Must the battery terminal to the post be tightened, or just enough to power the car?
Q: Could I have the OE wires mixed up? Red connector/brown wires vs Orange connector/green wires?
I don't have a voltage meter. Maybe that is the next step unless something turns up as a solution.
#15
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Yes, horn sounds when ignition is turned on with both wires disconnected from the horn button.
I removed the steering wheel and metal ring with male lead from assy, horn still sounds. disconnected "ground" horn still sounds. Plugged in wire from adapter to each of the male ends on horn button, with and without ground connected and horn still sounds.
Q: Could the "Porsche Drive Block" be a lending factor?
Q: Must the battery terminal to the post be tightened, or just enough to power the car?
Q: Could I have the OE wires mixed up? Red connector/brown wires vs Orange connector/green wires?
I don't have a voltage meter. Maybe that is the next step unless something turns up as a solution.
I removed the steering wheel and metal ring with male lead from assy, horn still sounds. disconnected "ground" horn still sounds. Plugged in wire from adapter to each of the male ends on horn button, with and without ground connected and horn still sounds.
Q: Could the "Porsche Drive Block" be a lending factor?
Q: Must the battery terminal to the post be tightened, or just enough to power the car?
Q: Could I have the OE wires mixed up? Red connector/brown wires vs Orange connector/green wires?
I don't have a voltage meter. Maybe that is the next step unless something turns up as a solution.
You can do a quick little test of the horn by taking a short little jumper wire and connecting the two wires together in the orange connector. With ignition on, when connected, the horn should sound. With ignition on, when not connected, the horn should not sound.
1. I don't think the drive block has any impact on this at all.
2. I'm not sure what battery terminal you mean. In general all the electrical connections should be good and tight. If you mean the 12 volt starter battery then the connectors must be clean and tight.
3. I don't think you have the connectors mixed up. I remember the red connector being the airbag sensor connector and the orange connector being the horn connector. Run the little test I mentioned above and you should be able to manually sound the horn. This doesn't involve the steering wheel at all, and should identify which of the connectors is the horn connector. It also gives you some confidence that the horn is working ok and you just need to connect the wires up correctly.