One Relay or Two

Oh yea. Did not know that about derale. They are expensive generally it appears.

What are you triggering your primary relay system with ? Does the unit include a sending unit connection or sending unit?

I am running this on a dual fan (simple on off) system and it was reliable all summer. We only put 500 miles on the 440 this summer , it was 101 as we climbed thru the mountains one day.

Stuck the probe in the cool end of the rad, adjusted it to activate about 190 (engine temp) and it cycles nicely all the time.

http://www.summitracing.com/parts/hda-3647/overview/

srduster340 said

My Ron Francis fuse box has a cooling fan relay/wiring built in and I want to use it for one fan and simply buy another kit for the other one. Lots cheaper than buying a dual controller. Derale has lots of negative reviews so I will stay away from them. Lol.

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