I never post but do a lot of reading. My profile is current. I am running a setup like Seb. Dual 11" spal fans with their ECU controlling the fans. I have it soldered in. Has a low and high setting. I also have it wired to the A/C compressor. When the A/C is on it kicks both fans to high speed. I can monitor coolant temps via Blitz RVIT. Sometimes when I go to work the fans never come on.