Hi all:

I have run numerous searches on this topic without success.

I need to know how to wire the horn. I bought the 964 contact part and have disconnected the Orange Plugs and bypassed the airbag. I think somehow the positive and negative wires from the orange plug must be connected to the hub and/or horn itself but don't know how to do it.

Any help will be greatly appreciated.

John

 

Have you checked www.p-car.com and looked up the non-airbag tech write-up?

 

All I saw on p-car was the DIY steering wheel controls. It didn't help. Is there another post that I missed?

 

Try searching Rennlist for RS Steering Wheel install, etc. I'll see if I can find some of them.

 

Alon:

I have spent hours reading all the Rennlist posts concerning the RS install and none of them specifically address this issue.

I hope someone can help.

Thanks

 

Are you having a hard time identfying which wires ultimaely lead to the horn ( from the orange plugs or column)?

 

Yes and more. As the clock spring isn't used with the RS, I removed it by unplugging the two sets of orange plugs. Two wires into one of the orange plugs control the airbag. I used a resister between these wires to disable the SRS light. There are two wires which lead into the second orange plug which power the horn. I have to figure out how to power the horn (probably by using both these wires).

If I am on the right track, the 964 part that gets inserted into the hub allows current to get to the horn. However, I don't know how to hook up the current to the 964 part or if I even have to do so (it is possible that the 964 part gets current somehow from inside the hub???)

Secondly, inside the Momo hub extender there is a black wire with a female wire connector and a trim ring with a male connector. On the back of the horn itself there is a male connector. I have no idea how these fit together.

Essentially, I have no idea how this puzzle fits together.

Thanks

 

OK, let me have a look at a PET and see what you're looking at. As for the horn, every car seems to work the same way: The switch to activate the horn is the ground wire. Once you have identified the hot (positive) wire and can feed the horn its power, the grounding is what activates the horn. Is this helping at all?

Can you post pictures of what you're looking at?

 

I do understand how a typical horn works and this is helping to narrow the issues.

1. How do I hook up the ground wire to the horn? Is the hub itself grounded? If so, do I simply connect the wire from the Momo hub extension to the Momo trim ring? Or does it go directly to the horn?

2. How do I hook up the power wire from the orange plug?

Thanks

 

I hope you didn't tak what I was saying as being condescending, it certainly want't meant to. Anyhow, yes, the hub should be the object that provides the ground. Does your horn button have a "spring-like" wire that helps hold it in place? If yes and it has one wire connection coming out of it then that is your ground circuit. That spring-like metal "ring" rests against the hub and gets its ground from there. The wire coming out of the horn button should connect to a wire fed from the column. That should complete your horn circuit. There should be no need to bring a 12V positive wire up from your column/orange plug if what I'm thinking is correct. And yes, you should simply connect the wire from the hub extension to the hub-ring. Let me know how it turns out.

 

Sorry. I didn't take your reply in any way other than a gracious offer of help and should have written my reply more carefully.

I think what you are saying and what I am seeing makes more sense now. I am going to try the following:

1. Insert the 964 part into the hub as it was designed. I think this alone may make the positive connection go directly up the steering wheel shaft. I can't see what exactly is in the hub, however, the 964 part pin is much too long to simply be there to keep the 964 part in place and is made of a conductive material. That tells me that it is designed to carry current.
2. Connect the wire from the Momo hub extension to the hub ring.
3. Connect the horn without regard to the male connector.

It seems to me that the horn will be grounded when the steel wire that goes around it makes contact with the Momo hub extension and the circuit will be complete when the horn button makes contact with the steering wheel shaft.

Thanks again for your help. I will let you know tomorrow if it works.

John

 

It sounds like we may have figured it out. Good luck tonight and call me at 416-930-7405 if you get stuck.

 

Below is an explanation that should help (Thank you for the explanation goes to Jeff)

"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 which 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 had the same problem. I have the solution. PM if you still need help.

Andy

 

Andy, just post it here so all the others who in the future have this problem can get it fixed.