![]() I didn't wire mine that way because I didn't want to run a wire to the ignition since my car has the master power off switch that kills all power. With stock wiring you could wire it as shown in the picture below. So it acts like an ignition switch powering up the car and all accessories. The master switch kills all power when off. I use a solenoid activated electrical master switch (Hotronics) in my 240Z. I wanted to use a thermal switch to ground and activate the relay so the fan didn't run continuously. The Painless 70 amp kit is simply either turned on/off using a fan switch inside the car or the ignition. Also, the Painless 70 amp relay kit is not designed to use a thermal switch ground. My bad explanation: I have my car wired differently then stock. See explanation and alternative approach below. Why not just wire the grey/white wire to the thermal switch? You would have to provide 12v to the other side of the switch. I'll see if I can make a CAD drawing of the shroud when I'm finished. I was planning on getting a champion 3 row radiator and buying their two fan option, but now I'm totally just going to do this. You could do the same thing using a 70 amp Bosch relay and some wire. Not a problem if you are comfortable working with relays. When the thermal switch turns on, it grounds the relay which closes the relay and energizes the fan circuit. I wired the relay to allow a grounding type Painless fan thermal switch to trigger the relay. The Painless 70 amp relay kit is wired for the ignition switch or a fan switch to trigger the relay. The Painless 70 amp relay kit is not designed to work with a grounding fan thermal switch. Note: All of the 30 amp Painless fan relay kits are wired to work with their grounding fan thermal switch. So the ground wire for the fan I installed is also 10ga.įor wires over 20 feet go one larger wire size. What gauge wire did you use to wire the thing up? Replaces failed Flex- a- lite Black Magic fan on Arizona Z Cars radiator. Painless Performance p/n 30111 Fan Control, Thermostatic, 185 Degrees On/170 off (grounding) $47.9 Works perfect.Ĭustom 19" H x 19.5" W x 1.5" Deep aluminum shroud by Mike Tolle Fabrication, Sacramento, Ca. Painless Performance 30100 Electric 70 amp Fan Relay Kits p/n.
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