David welcome aboard.
I am assuming you are referring to a breaker for a windless, is it factory or aftermarket installed?
It can vary but places to look are the anchor locker, engine compartment, or at the helm near the rest of the fuses or breakers.
If all else fails trace the positive cable from the windless back to the battery and the breaker will be in between.
1997 2400 SCR
5.7 Vortec / Bravo 2