KIT-1011 | DUAL FAN RELAY KIT

APPLICATION: Any 12v electric fan setup.

The PSI dual fan relay kit will come with everything you need to wire dual fans into an LS or LT swap harness. The KIT-1011 fuse block comes with 2, 35AMP relays that are pre-installed and pre-fused for ease of installation. The Fan 1 and Fan 2 trigger wires on the fuse block are color coded to be connected directly to any PSI LS wiring harness where Fan 1 would be the green wire and Fan 2 would be the blue wire. This will allow the ECM to control the fans based on the coolant temp of the engine. PSI tunes are usually set to 195° for Fan 1 and 205° for Fan 2.

Complete kit for controlling engine cooling fans

Includes relays, wiring, and fuses

Designed specifically for high-performance engine builds

Simple installation for accurate and reliable fan control

Helps maintain optimal engine temperatures in demanding conditions

NOTES: 1 kit will power two fans. Instructions included.

The Fan Relay Kit is all you need to get your electric fans running on you LS Swap.

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- 10/23/2026
  
  LS fan relay
  
  I used this relay for Ls1 swapped '86 Camaro. Used PSI's LS controller kit. Running Champion Radiator with dual fans. This relay made hooking up the fans super easy. Even hooking up a manual switch is easy. Clean looking and well labeled. Highly recommend if doing a similar swap.
  
  Kevin
- 10/15/2026
  
  Highly recommended
  
  Highly recommended
  
  Bullfrog
- 08/20/2026
  
  This is a great product! installed with no issues
  
  Highly recommend this product
  
  Ramon
Applications

Looking for an Affordable, In Stock, Plug and Play wiring harness for your LS Swap? PSI sells Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. All PSI Harnesses are Made in the USA and are 100% Computer Quality Tested. In addition to wiring harnesses, PSI carries Holley Products, Vintage Air A/C, Dakota Digital Gauges, HPTuners and PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion!

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Dual Fan Relay Kit | PSI

Dual Fan Relay Kit | PSI

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