Hello everyone, I have converted my Dodge Ram Van to an e-fan.

My problem is currently that I would like to have a control that turns on the fan as soon as I start the air conditioning.
Has any of you ever done one and could help me with that?

Many thanks in advance



Peter

 

Wire the relay that so that it activates with the a/c compressor clutch. Then it is completely automagic, and you don't have to worry about it.

 

What is controlling the fan on/off now?

 

When you say you converted, do you mean you removed the clutch fan and replaced with e fan? Curious what fan you used.

I converted mine to a flexalite 295 fan that came with a controller already. The controller had hookups for both a temp sensor and a connection for the ac compressor. I believe you can get any type of generic controller for much cheaper. As another poster asked already, I'm also curious how you control your fan now.

 

I did an electric fan conversion on my B250, great conversion! A/C starts cold at Red lights now. I bought an inline radiator hose adaptor for my upper radiator hose and put a temp sensor in, bought a 50 amp relay kit and used a 1996 Thunderbird fan. 4 years now no issues!

For the A/C, the relay kit came with two wires to turn relay on and one is for the compressor BUT if you just wire it up there will be problems. With a/c off and if the temp gets hot enough to turn on it WILL cycle the compressor on because it will get power to it. The solution that I used was a one way diode so power could only leave the compressor but per can not go to it from the relay side. I took my wire right off the compressor. Diodes are cheap, just make sure it is a one way.