Looks like the circuit just goes from the battery to the ignition then a circuit breaker followed by the thermo switch and then the fan motor itself.Is the fan relay a factory unit? The reason I ask is some of the after markets relays can be normally closed instead of the proper normally open .
Thus they give current flow when the switch power is shut off witch is the opposite of what you'd want to happen.
The culprit was the ignition switch itself. I used an aftermarket switch because the previous owner wired in a tractor switch from tractor supply. It turned out the aftermarket switch sends power to the fan when it is in the off position but it does not when it is in the on position. I’ve ordered a factory ignition switch.Someting was put back together wrong, if the key is off, then no power should flow to anything.
