There's a single brown wire ussualy near the booster. Unplug that wire. Use a timing light to set the timing to zero and plug the wire back in.
Speaking in a grammatical sense, one sets a precedent, not a precedence.
when the sun/moon appears to slowly meet the horizon and disappear
An empty set is considered a finite set because it contains zero (0) elements and zero is a finite number.
That is the definition of a closed set.