Cooling Fan Relay Kit Any Feedback

May 23, 2017 4:56 PM - 480 Views Create A New Thread

Builder's Corner

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Rosharon, TX

Cooling Fan Relay Kit Looks like the Cure
I am replacing an adjustable relay in my Cobra.

This looks like a good set up to run off a thermostat and a manual switch. What do you think???

Installing air conditioning to your hot rod? Need a cooling fan relay to operate off of a thermostatic switch and when your a/c is on? The dual activation cooling fan relay kits by Painless Performance are exactly what you need. Only a few minutes for the installation and your cooling fan will come on when the engine reaches the preset temperature of the thermostatic switch mounted in the engine head or when the a/c is turned on.

This kit includes:

40 Amp relay with mounting base
30 Amp circuit breaker protection for the electric fan
Thermostatic switch 185°F On/175°F Off (thread size: 3/8"-18NPT)
1/2"NPT to 3/8"NPT adapter
Pre-terminated and printed wire harness
Simple to use Posi-taps for the ignition and a/c compressor connections
Mounting hardware and insulated terminals
Illustrated instruction sheet

Willie Moore

Cooling Fan Relay Kit Looks like the Cure Willie Moore Painless Wiring

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  • GeneF
    Jun 18, 2017 at 7:13 PM

  • Looks like a good kit. I personally prefer the Dakota Digital unit so that I can customize the setting to my liking in just a few minutes. I agree with the other reader about running the ground wire all the way to actually can hear the fan pick up a few RPM in some cases after moving the ground wire to the battery.

  • jimmothershead
    Jun 14, 2017 at 7:54 AM

  • Will
    Excellent choice.
    Most good fans pull 22 amps. Check load and match all wire size accordingly. Get feed from starter battery terminal.
    Mount circuit breaker with in 12".
    Do not use manual switch. Stick with temp switch that controls relay.
    Ground should match ALL load wires. Do not ground to core support, fender, frame, etc. Steel is a resistor not a conductor. Ground to grounding block under the dash or with ground cable on block.
    After installation, fire it up and feel all wires, grounds included, all devices, and all connections.....any heat ?
    I have wired over 200 rods since 1957.
    Have fun.
    Jim 410 535 1933

  • jimmothershead
    Jun 14, 2017 at 7:45 AM

  • Will
    what do you use ?
    Check my blog this AM, 6/14/17
    Jim 410 535 1933

  • okie34
    May 23, 2017 at 7:05 PM

  • That is the one I installed. I got the 185 on 165 off. Installed the sensor on the passenger head at the back. Small block chevy. Works great. Also installed a spal 2500 cfm fan with straight blades. Makes some noise when on but no heating issues in 100 degree heat with the AC.

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