i have been reading here and going thru efan temp problems. tis weekend i installed a dc controller that i had to control the fans. i like it the best since it starts the fans out at about 10% and then they work there way up. when the a/c comes on it comes to 50%. it has worked on other apps for me. they even offer a light that can be hooked to it that changes color to tell you what % they are on. still need to mount the light and the switch. i am going to use the switch to shut off the a/c signal when on the freeway. here are a couple a pics from the install.