Marty, > The current drawn by John's fan setup is well within the safe > operating range of an ordinary 40 amp auto relay, with no need for > overly complicated control systems. You can't even tell when they > come on, except for the "cooling fan fail" light". > > PS: My coolant guage needle points to just slightly above the first > mark above cold after warm up. Likewise here. New 3 core radiator from Toby & John's fan upgrade, my temperature is identical to yours in all conditions. Sitting in stop & go traffic, 105 degrees outside with the A/C on full blast and the needle never goes near the halfway mark on the gauge. Sits just above 1/4 most of the time and goes up only slightly in the above conditions. I also see no reason for a fan modules or circuit upgrades; John's fans draw a fraction of the power the original setup did. They're also extremely quiet. Compared to $200 for a Zilla plus who knows how much to replace the stock fans when they die, I feel I made the right decision. -Ryan To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/