Reply to "Fluidynine radiator temp sender"

George PAdmin.

I suggest activating both relays with only 1 temp sender (switch). this way, the contacts of each relay only has to handle the current of one fan. Each fan should have it's own fuse as well.

Normal automotive way to accomplish this is to provide +12 volts to each relay coil. Wire the ground of each coil to the same contact on the good temp switch. wire the other contact of the temp switch to ground. When the temp switch closes on rising temp, both relays should activate.

your friend on the DTBB

3/7/065:45 PM

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