All my electrical woes.

The limiter on your car is INSIDE the fuel gauge. Any switched power TO the cluster is NOT FUSED and comes right off the ignition switch. I don't keep track, but I think on my 67 (obviously different) it "Yd" off right at the ignition switch, that is, the DARK BLUE ignition feed comes right out of the switch, Ys off to the cluster and out through the bulkhead to the ballast resistor.

So none of the "Ignition run" power goes anywhere near the fuse box.