Disconnect the negative battery cable.
take the top off the box by the battery, pull the RCM module up and out, do not disconnect the wiring..
( It's the one with all the fuses closest to the engine. )
Remove the black plastic cover from the RCM ( small screwdriver, lots of prying )
Lay it on cardboard or some shop towels on top of the other modules.
Reconnect the negative battery cable.
Turn the ignition switch to on/run.
With a wood dowel or the like, manually close the contacts on the horn relay by pressing the movable armature,
if the horns blow then you probably have a clockspring issue, if not, then check the #1 15 amp horn fuse.
If that fuse is OK, try using a small screwdriver and shorting across the horn relay contacts.
Of course, it could always be a bad horn relay, remove the RCM and send it to tighed1.




RCM relays