Here's a list of what I have to set mine up. Taurus can, spal 185 on 165 off temp sender, 35 amp self resetting breaker and a 85amp constant duty solenoid.
8ga wire runs from the batt to the self resetting breaker then to on big lug on the solenoid. Another 8ga wire is connected to the stock can wire for high speed. The switch power for the solenoid comes from an ign hot 12 source. The relay ground then goes from the ground lug, my dash switch for on/off then out to the spal sender. When the motor heats up the sender grounds the circuit which turns the solenoid on and runs the fan. I decided not to go with a fancy pants high dollar controller. Coming from Florida it's not gonna bother me to run on high speed all the time.
88 YJ 35's 8.8 rear, family style roll bar, ax-15 external slave conversion, Custom double D fab dash 4" of lift taurus fan, Head light wiring upgrade, MSD 6al, JB conversions SYE, 258 with RV cam, Long tube headers, Borla exhaust. 1"mm, Auto meter gauges.