Horn will not work

Help....... I have a 97 Mustang convertable GT. here is my situation.
one. the horn will not work (blow) at all
two. I am getting a warning lite on the dash about the ''air bag''
I have removed the 'airbag' and accessed the innerds of the horn.
here is what I have ''checked' for power...
there is power on the horn fuze in the main terminal box under the hood the fuze is good
I have checked the ''horn relay'' it is good. I transposed it with the ''driving lites'' relay and it works fine.
Inside the ''horn box'' on the steering wheel. THERE IS NO POWER ON ANYTHING. I unplugged the wires to the cruise control/horn buttons and there is no power coming up the steering column.
I checked for power on the yellow casing wires for the air bag and there is no power on either of the wires coming up to the air bag attachment...

Here is what I propose. I believe there is something ''unplugged'' on the steering column coming up from the engine compartment of the car. I cant find any ''plug in'' along the steering column but i am sure that is the problem because everything in the terminal box is ''hot''.....'
If you could send me a ''location'' of the connection to the steering column of the car I would appreciate it.
the car is a 97 Mustang GT Convertable and a guy has been working on the car and I can not get in touch with him now.

PLEASE HELP ON THIS ......
Seajay .....
ps. feel free to send comments to my e mail address or send your phone number and i will call on ''my dime'' for information.
my celll is 828 612 2608

[email protected]

many thanks ....

Welcome to the forum MrSeajay. Did you try connecting 12V directly to the horns to see if they work? Remove the horn relay and see if you have 12V at the relay coil and switch inputs. The horn relay should have four contacts. Two of them should have 12V on them at all times. These are the feeds to the coil and switch. One of the other two contacts goes to the horns (this is the other side of the relay switch) and the last contact goes from the relay coil up to the horn button. If the relay doesn't have a picture on it showing what contacts are connected to the switch and coil, use an ohmmeter to determine which two contacts on the relay are connected to the coil. Only two contacts should have continuity between them. There will be some resistance due to the coil. Now that you know which contacts go to the coil, you know where to look on the connector that the relay plugs into for one of the 12V contacts. If you don't have 12V on one of the connector contacts then your problem is somewhere between the connector and the fuse. If you do have 12V on two of the connector contacts then the next step is to connect one probe of the ohmmeter to a good ground and the other probe to the connector contact that would go to the other side of the relay coil (the one without 12V on it). As I said before, this contact goes up to the horn button. With the ohmmeter connected you should show continuity when the horn button is pressed (meaning very low resistance). If you don't get a low resistance reading when you press the button then the problem is between the connector contact and the horn button. If everything seems to be ok at this point then the problem is between the relay switch output and the horns. Let me know how you make out with this problem.