Trained (ex)Professional, , 1953-2018 RIP
Sounds like the "bring-it-to-the-dealer-so-they-can-rip-me-off" warning light. Many cars around this time had them with a variety of different names; Service EGR, Emissions, Check Emissions, etc. etc. and are triggered by mileage. Did your Spider just reach a milestone like 50 or 100K? If that's what the light is, I'll try to dig up where the reset button is. Some manufacturers have the reset on a box under the hood into which the speedo cable goes.