Caspers Electronics Dual Fan Relay Harnesses

When a vehicle's factory fan relay cannot safely sustain the full load of two fans, a supplemental relay system must be used. Caspers Electronics dual fan relay harnesses are designed specifically for this purpose, taking the excessive electrical load off the factory wiring and placing it on the two sealed relays of these plug-and-play harnesses.

The relays are both energized by the factory fan relay, reducing the circuit load on the factory relay, and permitting full coolant fan control without overload risk. The fans are then both powered at high speed when cooling is commanded via factory low speed coolant fan control through the ECM. This system assures proper load through the relays with proper power distribution.
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