Toyota Repair: Update: Corolla Overheating, 1991 toyota corolla, jumper wire

Question
Ted, I took your previous advice to unplug the water temp sensor from the thermostat housing on my 1991 toyota corolla since it was overheating. After the fact that I had replaced the coolant, replaced the thermostat. There was no current going to the 30amp fuse that leads to the radiator fan. Unplugging the temp sensor did not start the fan up and also, when I turn on the A/C the A/C fan does not turn on as well. The A/C comes out cold when the car is starting up but once the car gets warmer, so does the air. I have checked all the fuses and they are working, both inside the fuse box in the engine and by the drivers side inside the car. I also replaced the radiator fan relay and it still does not turn on. What would you suggest? My neighbor recommends finding out why there is no current going to the fan relay... something about an "open circuit that needs to be closed" Any thoughts? Thanks in advance.

Answer
the 30A fuse is connected directly to the battery and is hot all the time, you need to find where the wire that supplies the 12volts to the 30A fuse is open, you can try making a jumper wire directly from the battery to power up the fuse and see if the fans are working normally, if that's the case you can either try to find the place where the wire is open or just make a new wire to bypass the existing open circuit.