Package Include：

1x Wiring Diagram

2x 40A Relay with Wiring Harness

1x 3/8" Thermostat Switch 185'F On - 175'F Off

1x 3/8" to 1/2" Adapter

2x Inline Fuse Holder

2x 20 Amp Fuse

8 Ring Terminals

4 Wire Connectors

Specifications:

Voltage: 12VDC

Temperature: Approximately 185'F On - 175'F Off

Thread Size: the temperature sensor has a 3/8'' pipe thread, and a 1/2'' adapter included

If you want to turn on the fans when A/C activates, you would need an additional relay kit and follow the steps below:

1.Connect the RED wire from the A/C relay to the grey wire (sending unit) of the original fan relay harness

2.Connect the GREY and COFFEE wires from the A/C relay to the ground

3.Connect the BLACK wire from the A/C relay to the +12 volt of the A/C compressor clutch wire

For reference: 12 Gauge - 20 Amps; 10 Gauge - 30 Amps; 8 Gauge - 40 Amps

Please note:

1.The thermostat MUST be grounded through the threads to the engine in order for it to work, and the engine MUST be grounded.

2.If you intend to mount high-profile cooling fans, you could crimp or solder bigger wires to it. The 14AWG wires (15 amps) are not bigger enough for high amps draw.