The cruise control and horn quit together, but there is no fuse marked as such.

There could be a fuse or relay issue since multiple systems became inoperative simultaneously. I'd suspect that when the alarm went off, someone targeted and disabled the horn system so that it wasn't honking inside the repair facility. Both the horn switch and cruise control switch are located in the steering wheel and therefore they share common components and circuitry. Try checking under-hood fuses #7 (7.5A), #13 (20A), #15 (40A) and #20 (40A), as well as under-dash fuses #7 (7.5A) and 21 (7.5A). If all these fuses are OK, much deeper diagnosis will need to be performed. One somewhat common failure item is the spiral cable (also called a clock spring) that transfers power to the steering wheel (while allowing it to turn). That part can be seen within the steering angle replacement procedure shown here: https://www.yourmechanic.com/article/how-to-replace-a-steering-angle-sensor-by-marvin-sunderland

Fuse #19 (15 amp) controls the cruise control. It also powers the horn so check your horn. If it works then check the cruise controls ground. If the fuse is good BUT the horn still doesn't work, then check the horn relay, as it also powers the cruise control. Check all wires/connections going to these parts also.

There should be a Cruise Control relay too. Find one thats the same and switch them out, like the horn relay. If the Cruise starts working then you have a bad relay.

If the switch is replaced,then it can be wiring issue or faulty cruise control board.But as the switch is replaced,get the voltage at the switch tested to confirm the switch is actually receiving voltage.If no voltage received at switch power supply wire then ,apply external 12 volt power to the cruise control switch wire and then see if cruise control comes ON.If yes,then you know wiring is issue.
=============

On this case, to troubleshoot this problem, there are solved help links. Click the link directly and refer the details to solve this problem yourself, with help of diagrams: ------

Ford ranger cruise control not working? http://technoanswers.blogspot.in/2012/02/ford-ranger-cruise-control-not-working.html

-----------

Horn and Cruise control quit working?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working.html

--------

Horn and cruise control not working on Plymouth Grand Voyager?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-not-working-on.html

------------------

Horn and Cruise control quit working on 2003 Jaguar S-Type?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working-on.html

-------------

Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500

http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html

----------

Cruise control stop working on 1994 Ford ranger?

http://technoanswers.blogspot.in/2012/02/cruise-control-stop-working-on-1994.html

----------

Cruise control not working?

http://schematicsdiagram.blogspot.com/2011/12/cruise-control-not-working.html

--------------

1996 Ford Explorer: Cruise Control Wiring Diagram?

http://schematicsdiagram.blogspot.in/2012/06/1996-ford-explorer-cruise-control.html

----------

These will help.

Thanks.

On these case,to troubleshoot these problem,there are solved help links.Click the link directly and refer the details to solve these problem yourself,with help of diagrams:------
Ford ranger cruise control not working?

http://technoanswers.blogspot.in/2012/02/ford-ranger-cruise-control-not-working.html

----------- Horn and Cruise control quit working?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working.html

--------

Horn and cruise control not working on Plymouth Grand Voyager?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-not-working-on.html

------------------
Horn and Cruise control quit working on 2003 Jaguar S-Type? http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working-on.html

-------------
Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500 http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html

----------
Cruise control stop working on 1994 Ford ranger? http://technoanswers.blogspot.in/2012/02/cruise-control-stop-working-on-1994.html

----------
Cruise control not working? http://schematicsdiagram.blogspot.com/2011/12/cruise-control-not-working.html

--------------
1996 Ford Explorer: Cruise Control Wiring Diagram?

http://schematicsdiagram.blogspot.in/2012/06/1996-ford-explorer-cruise-control.html
----------
These will help.
Thanks.

To troubleshoot your problem,there are few help links,provided below.Click the link directly and follow the procedure to confirm the fault.So as per that you can continue further in repairing this issue of cruise control not working.
The direct help links are as follows :-----cruise control not working?

http://technoanswers.blogspot.in/2012/02/ford-ranger-cruise-control-not-working.html
-----------Horn and Cruise control quit working?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working.html

--------------
Horn and cruise control not working on car?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-not-working-on.html

------------
Horn and Cruise control quit working suddenly?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working-on.html

----------

Cruise control stop working ? http://technoanswers.blogspot.in/2012/02/cruise-control-stop-working-on-1994.html

---------

ford ranger cruise control not working? http://technoanswers.blogspot.in/2012/02/2005-ford-ranger-cruise-control-not.html

-------------

My Cruise control not working? http://schematicsdiagram.blogspot.com/2011/12/cruise-control-not-working.html

----------

This troubleshooting help links will help you to confirm the problem.

Thanks.

I have a 2006 Dakota V8 4.7L
My cruise control quit working, but no issues with the horn. This all happened after the EGR valve was replaced. Could that have anything to do with it?? Any suggestions??

the body control module has most likely failed, have the dealer test it.

Sounds like a bad clockspring

horn and cruise are tied to the clock spring... it's a factory recall!! take to a dodge dealer your airbag light is on too? mine was...