We have a 1995 Miata and the horn stops working from time to time. If you lift the hood, right in front of the radiator, the horn plugs in. I just re plug it when it happens. I hope this is what your miata is doing.
The horn is right in front of the radiator, on the passenger side on the 2000 Miata. You can see the bracket holding the horn, just to the left of center next to the hood locking mechanism.
check the horn fuse
Check 15 amp fuse "R" in the fuse box. It appears that the horn relay feeds part of the cruise control system.
The Miata horn is located 6-8" to the left of the hood lock assembly towards the passenger side. It is held by a single bolt that also grounds the horn for electrical signal. The horn is hidden behind the bumper. Remove this bolt and you will be able to remove the horn by reaching up inside the mouth of the car. There will be a single, black electrical spade connector that is removed.
could be horn relay in underhood fuse box. or bad horn..
where is horn relay on 1995 buick roadmaster
check the fuse
Milton Horn died in 1995.
Leo Horn died in 1995.
Walter Horn died in 1995.
bad ground or wiring, bad switch/button, bad horn, bad horn relay, fuse.
Fog?