Fantastic Fan PWM modification

crashmaster

Advanced Member
Joined
Oct 1, 2018
Messages
67
Location
Girdwood, Alaska
I rarely use my Fantastic Fan because speed 1 sounds like a jet on takeoff roll at about 85% thrust. I wanted to use the fan without having to put in earplugs and still have it move some air through the camper.

I looked through a couple of other threads for this topic but was never able to see an easy to understand wiring procedure. I found one on YouTube that was easy enough to understand so even I could do it. I just did the mod today and so far it works very well and I cannot hear a hum or buzz from the PWM. The fan can easily be put back to stock wiring in just a few minutes if desired.


Both the 3 position speed switch and the fan direction switch still function like they do pre-modification. I set the fan speed switch to 3 so the resistors are not in use when I use the PWM to adjust the speed. The PWM also has its own off switch.

I was originally going to put in a new MaxxAir but decided to try this out and so far it’s works well. Really nice to have 100% fan speed control.

Here’s what I ordered online

RioRand Low Voltage DC 1.8v 3v 5v 6v 12v 15V Motor Speed Controller 2A PWM 2PCS
Amazon.com

ANCIRS 30pcs Semi-Insulated Piggyback Spade Connectors, Quick Disconnect Piggyback Spade Assortment Kit, Female/Male Cable Crimp Terminals, 22-10 AWG
https://a.co/d/1fMThxP

Some 16 awg wire. Black is (+) White is (-) in my 4 wheel camper.

And some liquid electrical tape to protect the PWM board from moisture

STAR BRITE Liquid Electrical Tape, Black - 4 OZ Can with Applicator Brush - Waterproof, UV-Resistant, Dielectric Sealant for Wires & Cables, Marine & Home Use (084104:cool:
https://a.co/d/bI3eM24

Hope this helps someone.
 
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