One problem related to headlight switch has been reported for the 1996 Mazda Miata. The most recently reported issues are listed below.
Airbag warning light stays on constantly all of the time. Very concerned about airbag failure but no recall info exists. Also my pop-up headlights are randomly retracting down whenever they feel like it. No amount of twisting on and off at the steering column switch will make them come back up and I have to resort to the manual popup button located under the emergency flashers. This has almost caused me to crash several times when driving after dark!.