Originally posted by Blackie:
SummitRacing.com has a "Thermostatic Fan Controller, Adjustable 150-240 Degrees, 3/8" NPT Probe" for $39.95. I'm not familiar with the wiring of the waterpump, but something like this should be able to be rigged into place, right?
Yes, that's a good start. Now, wire it to a relay to send 12V when triggered, and 8V when not triggered, then you have the WP controller. Add a couple of POTs and relays to make it a more linear flow rate...
