You did not state what engine package you have but Mercruiser has a breaker that is mounted on the engine, look for a RED button and press to reset it. The trim pump also has a inline fuse next to the pump assembly. This breaker provides power to the engine systems however things such as the blower, bilge pump, radio are not on this circuit and should still work.
1997 2400 SCR
5.7 Vortec / Bravo 2