I swapped to breakers
I also have 79 O'Day 25 and I used circuit breaker switches ordered from Mcmaster Carr, Aircraft spruce carries them as well. I used the original panel with the switches in the same position and 12 volt automotive panel lights in the old fuse holes. When a switch is on, the light comes on...handy for making sure ever ything is off at a glance at the end of the day.