The "fit all" fan harness solution


Independent circuitry for Dual Fan selection, correct OEM operation with AC

Custom made for your application

  • Weatherpack construction with HD wiring

  • Dual 40 amp rated military spec relays. (3 relays--correct dual operation with for high and low speed fan action)

  • Direct battery power connection removes excessive loads from factory wiring, relays or fusible links

  • Improved voltage supply = improved air flow

  • All connections are crimped and sealed like an OEM connection -- not soldered to cause early vibration failure

  • Up to 12 feet of cable relays to ECU or switch control for custom applications

  • 6' cable from Relays to Fans

  • Supplied with aftermarket connectors for auxiliary fans

  • Requires ECM reprogramming when vehicle did not originally come with electric fans -- can be manually switched, or powered using a thermal switch in radiator

Proper GM programming will:

  • Run each fan individually. Can be programmed for Two fan or Single fan cooling. On and off temperatures of your choice

  • Run fans with ECM AC request signal -- not the clutch signal. Therefore the fan doesn't cycle on and off with the fan clutch, but uses the pressure signal from the AC system to correctly run the fan. OEM pins, nothing clipped to harness wiring, simple, reliable installation

FAN PRO Dual Electric Fan Harness

Choose One

    Toll Free: 1-888-WESTER-1 (1-888-937-8371)

    Tel: 403-377-2277   |   Fax: 403-377-2270


    Tech Support:

    Shipping Inquiries:


    Mon - Fri: 8 am - 5 pm MST

    Closed All Canadian Stat Holidays

    Wester's Garage... We'll get YOU going FAST!!

    • Facebook Social Icon
    • Twitter Social Icon
    • YouTube Social  Icon

    © 2020 by Wester's Garage