I would use a second sensor for the cooler. It is a cool idea about using the ECU, but I want to keep it simpler. My ideal setup would consist of
sprayer nozzel (green house scavanged)
water resivor (junk yard scavanged)
pump (jys)
intake sensor (?)
relay to run (?)
override switch
I would prefer it be a stand alone setup. It easier to figure out what wrong if theres less to it.
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