How do I reset the service interval light on a 1983 Honda Accord?

I just took care of the routine maintenance myself and I need to reset the service interval light (not the check engine light) on my 1983 Honda Accord. How do I do this?How do I reset the service interval light on a 1983 Honda Accord?there is a little square on left of steering wheel on dash near the light push it in with key it will go back to green