So i have a 2 speed taurus Efan and needed some clarification.

I have the low speed hooked up to 1 PWM on at 195 off at 190.

Now is it as simple as hooking up the high speed to another PWN labeling it thermofan and setting the on and off temps ?

The high spped i want o hook it ip at on 205 off at 200

is 205f too hot?

hybrid

 

If it helps at all, I've got a Tauras E-fan as well and have both speeds hooked up. I have a Sprint RE and have the Thermofan output hooked to one relay and 30A circuit breaker to turn on low speed at 185 off at 175 and then I have one of the Auxillary outputs on the Thermofan 2 option and have it on a second relay with a second 30A circuit breaker to turn on high at 203 off at 195. I havn't verified that this works as I'm still finishing the car. But should be done by this weekend..

 

so.............i cannot use two PWNs? to control the same fan with 2 speeds

 

Connect the second speed trigger (PWM) wiring to a different relay and use the C/O contacts to switch between the 2 speeds. Pretty sure it doesnt power both inputs together so do it that way. I don't see why you can't use 2 outputs switched at different temps, I would, and I'm an auto-sparky.

Would be:
30 from Low Speed Relay Output (was to fan)
87A to Low Speed Wire on Fan
87 to High Speed Wire on Fan
86 to 12V (Ignition Switched, or loop to 30 to get power from there)
85 to ECU PWM Output (High Speed)

This still requires the other original relay to switch on at low temps, but this one then switches the output tot he other wire when you want the high speed to come on.

Hope thats clear as mud.

 

yeah clear as mud is right..................

Did i mention i have a all in one unit volvo relay/switch to switch between the low and high speed already.
I think u answered my question already... as i can use the 2nd pwn to contol the second fan speed thanks

 

uh... yep