Just had complete fuel setup on my Ovation2 M20R with Continental IO-550 G engine. This required numerous full throttle runs with upper cowling removed so fuel flow adjustments could be made. Now the “alternate air” indicator light flickers ON and OFF on the cockpit panel during takeoff and under high power situations as if the switch is vibrating in a way to close the light circuit. Once power is reduced the light goes off and stays off. I have pulled the manual cockpit lever several times and when pulled to “alternate air ON” the indicator light comes on as it issupposed to. Does anyone where the activating switch is under the cowling so it can be inspected?