Hello Guys,

So I'm installing a 3.8 Taurus Fan which has 3 wires black, brown/orange and brown/yellow. To my understanding Black is ground, brown/orange is low speed and brown and yellow is high speed but I notice something when I connect black to chasis/negative and brown/orange to positive in the terminal it pulls are from the radiator(good) however when I connect brown/yellow to positive it then blows air into the radiator. I want both speeds to work as puller. Any of you experience this? ideas? thoughts?

 

If the low speed run with black to negative and the high speed runs in reverse with black to negative, you might need to wire in a replay to control the high speed using the high speed positive as the source to the relay to reverse the polarity.

 

Use a dual speed fan controller.......

 

Fixed!! Black wire was actually not ground, so I used brown/orange as low positive, brown/yellow as ground and black for high speed.

 

Glad you got it fixed! The Taurus e-fan has been a very popular upgrade for many years and it works very well!