MFA100 Relay Fan Harness Kit with Adjustable Thermostat - Universal Cooling System for Cars, Trucks & SUVs - Perfect for Overheating Prevention & Engine Temperature Control

Product Description

Maradyne MFA100 Relay Fan Harness w/Adjustable Thermostat. Maradyne uses only high quality wiring kits, using only premium SAE GXL wire & sealed fuse holders. The relay holders of the harness slide together; and harnesses interconnect with "bullet" terminals for a neat, professional appearance. The installer assumes responsibility to replace the 30 amp fuses supplied, with those recommended by the manufacture for each application. MARADYNE provides fuse recommendations with each fan. It is the installers responsibility to secure wiring away from high temperature areas where installation may be cut and to insulate any wire connections exposed at completion. MFA100 has an adjustable thermostat with remote sensing bulb. The thermostat may be adjusted to engage at any temperature from 32 degrees to 248 degrees F. The bulb is normally inserted into the radiator fins on the inlet water side. It must fit securely, and should be inserted close to the radiator tank. For consistent operation, the sensing bulb should NOT be in an area of high airflow. The installer may make a pilot hole through the radiator fins using a #1 or #2 screwdriver, however care must be taken to avoid damaging the radiator tubes. These harnesses have a circuit in parallel with TEMP SWITCH labeled FAN SWITCH. This connects the fan pressure [2wire] or Trinary [4Wire] switch, which is either standard or optional on many aftermarket A/C kits. This is the most efficient method to control a fan in A/C mode, engaging it only when the fan is required to lower discharge pressure. MARADYNE does not sell these pressure switches. For racing applications, where it is desired to manually engage the fans, a toggle switch may be mounted within the passenger compartment and connected to the fan switch terminals.