97 tarus what is in the same circuit as the turn signals

Carmon, check the posted links to see how to replace the turn signal switch. "I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

How to Install Replace Turn Signal Wiper Switch Dodge Intrepid 93 97...
How to Replace Turn Signal Switch Chrysler Sebring
97 dodge intrepid turn signal problems

Sounds like a short in the socket or a bad ground.
The parking light is one circuit and the brake turn signal is another.

Not sure I follow you.
The engine temp sensor sends a signal to the engine computer and the computer decides when to activate the fan relays. So if you have power to the fans you would also have power to the high or low speed relay the temp sensor is probably working. There is a third relay for the ground circuit.

It is a 15 amp light blue fuse, diagram is located here.

It is most likely another faulty bulb in the turn signal circuit.
Ensure the indicator bulbs are replaced with the correct (specified) wattage rating.
Check you haven't dislodged or otherwise lost the ground connection to the rear tail light bulb sockets.

your high beam/turn signal switch is bad.

I would have to say that it is your turn signal switch in the column. You will have to take the steering column apart and replace it.

There is a lot more to the cooling system than the radiator and thermostat. 97 and 98 taurus' are prone to cooling fan failure. They also have issues with the coolant turning to a rusty colored sludge that can plug the radiator, and it let go long enough can eat the fins off the impeller in the water pump even cause it to break free from the shaft.

recheck spark by putting a plug into one of the plug wires and place on valve cover, crank engine and see saprk in that plug. check fuel pressure during cranking to verify fuel supply. If you have no fuel pressure check fuses and fuel pump relay, in fuse box and power distribution box under the hood. If all are good check for power at the fuel pump connector with the key in start position, in run position the power will only be there for about 5 seconds, you are correct with fuel and spark it should run, let me know what you find

This is usually caused by the switches sticking in the door latches. Try spraying some WD40 in the latches and open and close the doors a bunch of times that should take care of it.