Product details:

Vintage Air 23102-VUW: Relay, Cooling Fan Use, 70 Amp, Single Pole, Each - These electric fan wiring kits from Vintage Air allow direct current to the fan without placing an excessive load on the fan switch. It also prevents current feedback from a coasting fan that can cause engine to run on briefly after the ignition is shut off. Vintage Air offers a standard or a heavy-duty wiring kit to suit your specific application needs. The standard wiring kit is for single electric fans, and the heavy duty wiring kit is for dual electric fans.