Was reading around and started to notice a lot of people recommend putting after market fand on a separate harness, and I havnt been able to be sure if the fans are running at full steam either, so i got a fan hanress to take the fans off of the stock harness. Still trying to figure out where to trigger it from. some peope say the pcm ground and others just throw a switch in the mix. Id rather have the computer controll it aince its been doing the job for 20 years anyway lol