1998 corvette horn does not work from wheel however the panic button works. Is there a connection in the dash which might have come undone

It appears to be a well documented issue!

https://www.google.com/search?q=2007+sahara+unlimited+horn+relay+location

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It seems there is something wrong in the steering wheel horn pad. I would strongly suggest you take it to an experienced Dealer. The steering wheel has an airbag which could go off causing injury. This would have to be taken out to get access to the horn pad system and connections. Probably all you could do, would be look at the bottom of the steering column and see if any wiring connections have come undone. Other than that, I wouldn't go playing with an airbag steering wheel.

The steering wheel connection is adrift? What made the circuit when you stripped it?

horn is bad or not connected more than likely

The alarm should use the same relay, so it would have to be in the wiring between the steering wheel and the relay, or the horn pad you checked.

The button on you steering wheel is the problem, try to open it up and pull the spring just a little bit. I think you have used it too much ;)

Press panic button on the remote to check if horn is broken or if the switch in the steering wheel does not work.
Also check fuse for steering wheel module.

I replaced the horn relay which is located inside of fuse panel under the hood of car on the firewall, have someone push button to be able to hear a clicking sound coming out of the correct relay, then trade out relay of the same and see if horn works

The HORN Is a GROUND CONTROLLED BUTTON you need to FIRST Check under CENTER STEERING WHEEL Cover to see if it has a Bad Commectiot, After Asuring this there Is c CLOCK Spring UNDER Steering Wheel that is Fairly Common for Failing.

The FOB / Remote Utilizes a Different Part of the Curcuit to Activate Horn, I Hope this Helps you With your Problem as Im Sure of All that I Advised. Remember to RATE ME !!

you need to Check the Wire inside the Steering wheel, When Grounded by pressing horn button the relay will send the 12 volts to Horn,

You Also could and Please Re-check the Color of wire for the Horn SHOULD be a Black Wire in the wire loom Under the Dash on the Column and If you Ground down the Black wire from Under the dash, You would Find out If it is In fact the Steering wheel it self,

you could also add a Second Button on the Dashboard

black wire to Button and then to Ground body,