If you are looking for a modern cooling fan controller that can control 1 or two fans and fully programable after engine off with user defined fan turn off times, this new version from dakota digital even has bluetooth connectivity to make programming even easier. Im about to pull the trigger on this to lower my under hood heat soak temps after key off. But I have no idea on its reliability, its aftermarket.
Check it out
https://www.dakotadigital.com/index....od/prd1207.htm