Complete the installation of your single electric fan easily and professionally using a Be Cool wiring harness kit. The single fan draws 22 amps so using one of these kits ensures having the proper wire gauge and relay to handle that amount of current. You can choose a version with or without (P/N BC-200) a thermostatic fan control. The thread-in thermo sending switch is pre-set to turn the fan on at 195ÂºF and off at 175ÂºF. Both kits include a 30-amp relay, in-line fuse, color-coded wiring with terminals attached and detailed wiring instructions.