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Old 07-08-2018, 08:40 PM
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sixto sixto is offline
smoke gets in your eyes
 
Join Date: Jun 2000
Location: Eastern TN
Posts: 20,841
Not cheap but installation looks easy - https://www.amazon.com/Derale-16795-PWM-Fan-Controller/dp/B00N0N75TI

How about a simpler Volvo two-relay controller with low speed for AC (existing aux fan trigger) and high speed over a coolant setpoint?

Is your alternator up for an extra 20 amps while idling?

Sixto
98 E320s sedan and wagon
02 C320 wagon
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