Assuming you still have the stock wiring harnesses, the '52s still only had the 2 fuses on the firewall for the taillights and headlights. See the picture.
It sounds like your issues are mainly in the ignition switch. You should check to see if there's power at the ignition switch output terminal. The power for the instrument panel comes from that terminal. As far as the foot operated starter switch, that's probably an issue with the switch itself. It's independent of the ignition switch. The horn sounding like a dying duck is probably the horn motor itself.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
