I'm installing a nice digital Cyberdyne temperture gauge for the HE, there was a 1/8" NPT (plugged) hole on the drivers side for a sending unit. The fans will be operated by remote control with a key fob like I done my TC & ESP/BAS, (fuses 17 & 18). Here's the gauge, (still waiting on it). http://www.jegs.com/webapp/wcs/store...0002_358763_-1
And here's the relay, installed and wiring complete. http://www.allelectronics.com/cgi-bi...C_15_AMP_.html I also am installing a red or green LED on the mount of the gauge pod so that I know the fans are on, (I've got the wiring already ran for it). Probably wouldn't need the light though, those two 330 CFM fans are quite loud. I considered running them off a tstat, but I thought I'd rather have control over them. You can check out pic's and what and how I'm doing it in the Tech & Mod section, thread titled - "Moving The HE Forward To Add Cooling Fans". I was just so excited to see how much air the fans pulled I had to post up a couple pic's in the SRT section for the people that don't hit the Tech & Mod section.