I have actually read through those same links and nobody offers a solution for the fact the ECU will read the negative trigger from the trinay switch as a fault.
Plenty of people say they add a 3rd relay but I cant seem to locate a wiring diagram for this scenario. I know how to get the fans to work using the negative (hi/low) trigger from the ECU but I can't figure out how to add the trinary switch into the mix....
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