I had thermostat controlled electric cooling, but I was getting ready to add AC so I pulled it all and went with a more capable radiator and clutched 7 blade steel fan.
Originally these cars had a basic circuit breaker built into the headlight switch, but they are a bi metal type and works basically like a old school signal flasher ( but slower)
Using headlight relays basically makes it useless anyway.
I don’t have fuses or circuit breakers on the headlights.
Relays only, and very well insulated and protected wiring.
Each of the four relays are 30 amp.(overkill) for sure.