89blue5.0

I am replacing my radiator and going with a dual electric fan. I want the first fan to come on with the ignition and the second fan I want to control with a switch. The fan kit I ordered comes with their own relays. These fans seem to draw a lot of current, where would be the best place to get power for them? Straight off the battery? And then install separate fuses for each fan? Since I have an LX, the switch under the headlight switch is a dummy. Can I make this a functional switch or do I need to replace it with an assembly out of a GT? I though it would be cool to use that switch to turn my secondary fan on and off. Thanks in advance for any help.

87notch408

What is your reasoning for having one fan come on with ignition then the second manually?
In my opinion having a manually operated fan is a mistake. I have seen to many people forget to turn it on.
I am using one of these http://www.summitracing.com/parts/PRF-30104/ to control my fan. You could hard wire one to the ignition and then use this to come on at your preset temp or you could use two of these one to come on at a very low temp temp then one at a higher temp... Just some food for thought.

89blue5.0

I was at the Mid-America Shelby Meet this past weekend and looked at several ways that fans were hooked up. The guy next to me had a 90 GT with a built 331 with a Procharger setup on 15# of boost. I liked his radiator setup. He was running a 2 core aluminum radiator from Summit and a Derale dual fan also from Summit. The Derale fans pull 4000 cfm. He had the second fan on a switch and said that he hardly ever has to turn it on. I ordered the same fans and a Fluidyne aluminum radiator from Summit. My water temp gauge is an Autometer mounted out on the cowl so it is right in my line of sight and I am always aware of what it is running. I just wanted to keep my install as simple as possible.

87notch408

I hear you, sounds pretty good. I had mine wired on all the time but decided to add the painless kit so it was only on when necessary.

mjr46

you don't want the fan to run all the time, that is sensless and in the winter it'll most likely affect closed loop/ delayed operation......wire it to a thermostatic sending unit, mine comes on at 200 an off at 180 an I run a 347 with no2 an use the summit radiator and I only have a single flexalite trimline fan and never overheats

RHuckster

Yea, run 2 seperate controllers/relays. You can adjust 1 to come on @ 200 & the other @ 210. More than likely you have a 195 deg. thermostat so this should work nicely.

Rick

smacked1

hey do you do side work on stangs? just wondering when i start ordering parts and need some help