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High Performance Cooling Fans Control Relay & Harness With Thermal Switch
Included Parts: Relay & Harness, 185 Degree Thermal Switch, Fuse Holder, Fan Pigtail Harness, Fuse, Terminals
These instructions will show you how to properly install the relay and harness for our Performance Cooling Fans. Our Fan Relay Kit can be directly installed on any vehicle with simple connections.
Fan Pigtail Connections
Red: Connect to Red harness wire using supplied yellow wire connectors.
Single Fan Connections
Red: Connect directly to the red wire on the fan pigtail harness (included).
Dual Fan Connections
Red: Connect directly to the red wire on both fan pigtail harnesses (included).
Thermal Switch Installation:
The Thermal Switch is an OE-style, thermostatically controlled sender that switches the fans on at 185 degrees when wired properly. When the temperature drops to 165 degrees, the switch opens and the fan(s) will switch off. The sender has a 3/8" NPT thread and can be mounted directly into a water port on the cylinder head or the intake manifold. An adapter is included for applications with a ½" NPT port, other sizes can be found at most automotive parts stores. It is important to not use Teflon tape or other types of sealant on the threads as it could create a poor electrical connection that would cause incorrect temperature readings and improper fan operation.
If you experience overheating, there are a number of reasons that can cause this. The first step in the process is to determine where the problem is, and to narrow it down to a specific location. Please contact our technical advisors at 951/245-9464 if you cannot determine the cause using our chart below.