Turns out that the furnace did not blow a fuse. The red power line was neatly sliced in half... hmmm. The connector had come off, or the nice or the water or something had taken it apart.
Furnace once again working.
But I would still be interested in "fuses". The compartment in the glove compartment seems to have engine related fuses. I have breaker switches in the rear tambour and a 12 volt
panel under the "liquor" cabinet. But none look like fuses.
Are there perhaps no fuses?