Fumblin's correct. The 3rd hole is for a lighter. Choke and throttle for the first 2. Underneath is a small 3 position switch which turns on or off the dash lights when the running/or headlights are on. Or you can put on a light over the throttle, choke and lighter area. Be careful with the switch, it's delicate. You did mean to say "above" the ashtray, right?
