Okay-----now we're getting somewhere! Yes if the horn works it might signal the clockspring is still functioning---just as IF the airbag warning light does NOT come on in the instrument cluster its a somewhat reliable indicator the CS is working.

Yes the VSS could be an issue since the servo gets its cues from it. I believe (and highly subject to being incorrect) but the speedometer and odometer also get impulses from the VSS. If that's the case do you have those functioning?

I'll add if you've checked fuses check for a master cylinder mounted switch that is a redundant safety---also check your brake pedal mounted switch too---both can fail in the fail safe mode and not allow the servo to energize.

Try all that---see what you find! Hope we're being even a little helpful.