Tom454

Just repaired the chopped up wiring back to factory and installed a factory fan relay. I don't know what the make/model the sender is in the front of the intake, but it registered the correct ohms at room temperature for a stock sending unit The engine had a 160 in it and a on-off switch mounted in the dash, and no fan relay. I have a 160, 180, and 195 thermostat. Which thermostat do I use? (no AUX fan)