Car cuts off when hot

Well I'm sure there are kits to wire up electric fans on cars that are not designed for one.
You would need a relay and something to turn the relay on. A coolant sensor won't do the trick, the sensor is what tells the computer the engine temp, and the computer decides when to ground the fan relay.
You would need a temp switch that is designed to close at say 220 degrees to ground or power the fan relay.
The fan motor would have ground and power wires.

there is a tube with a red ring at rear left of motor that is your trans dipstick

REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP.MAKE SURE COOLANT NOT LOW.IF ALL IS GOOD CHECK FOR LEAKING WATER PUMP WEEP HOLE IF LEAKING REPLACE WATER PUMP.MAKE SURE COOLING FANS RUNNING.IF ENGINE RUNNING HOT WHILE SITTING LONG TRAFFIC LINE AND COOLANT NOT RUNNING.CHECK COOLANT FAN RELAYS AND FUSE.IF ALL IS GOOD HOT WIRE MAKE SURE COOLING FAN MOTOR GOOD IF COOLING FAN DONT RUN WHEN HOT WIRED FAN MOTOR BAD.IF FAN MOTOR OKAY AND FUSE RELAYS GOOD YOU HAVE FAULTY COOLING FAN WIRING.YOU COULD HAVE BAD ENGINE COOLANT SENSOR OR FAULT IN ECM CODE SCAN TO CHECK THEM BOTH.CHECK ENGINE OIL.LOOK LIKE MILK SHAKE YOU HAVE LEAKING HEAD GASKET.IF OIL LOOKS OKAY.YOUR ENGINE BLOCK, RADIATOR AND HEATER CORE NEED FLUSHING.

not many engines have a low oil sensor so it is up to the driver to keep an eye on the oil light or check the level at least every other day
if you get a socket onto the harmonic balancer nut and try to turn it , that will indicate if the motor has seized or not
clicking starter solenoids indicate loose battery terminals , dirty terminals bad ground wire connections bad battery ( load test will check that)

Bad Head Gasket

Touch both heater hoses going to the heater core. They should both be hot. If they are, then the problem is probably a broken or binding blend door or bad blend door actuator. If one hose is hot and the other cold, then the heater core is clogged.

It is the engine front cover( from diagram in the 1988 service manual

Possibly in a "Safe" or "Limp home" mode. If so, have a look at the wiring harness on the transmission. I'll bet that the seal around the lid on it is failing. Clean the harness up, and reseal the lid on. If this does not fix it, have a mechanic look at the shifter linkage.

Sounds like the battery is weak or the alternator isn't providing enough amps to keep the engine running and power the lights at the same time.

if you have leaking in the cooling system the engine should ovarheat, first stop leaking.