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Electric fan swap on 89 325i , need help/advice

3K views 4 replies 4 participants last post by  ldsbeaker 
#1 ·
I going to install electric fan from 94-95 Mustang GT that have 2 speed and pulls 2500 cfm+
So I was wandering how do you guys (ones who install electric fan in favor stock one) wire up electric fan
I know how to wire up with switch but i want something that turn fan on on example 170F
So what did you guys do and how
 
#3 ·
I had an adjustable fan controler on my last BMW and have installed several, you can buy or order them where they sell aftermarket fans. Real simple the sensor pushes into the fins on the outlet side of the rad and an adjustment that kicks a relay sending power to the fan at the set temp. Two might work for your setup. They run about 35-45+ bucks.
 
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