Auxiliary Fan (Compression Shroud) DIY [Air Conditioning]

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Yes CorNIC! the blk/green wire is a ground, I think all 3 of them came from directly through the fan motor, so meaning there's no such of fuse or relay
that could cut the power from going through, as long you got power at the plug connector head. And were both tried the same
thing by sending a separate power to the fan motor itself, and if you watch closely, you can see the fan blades (jump/jolt) a little bit.

Otherwise, fixing the thermostat will be a good fix for the future winter soon, but will NOT garanteed to fix the fan issue. Because I have my thermostat working great no problem, and I never had any overheated
engine while driving. But my friend who has a jeep cherokee told me that
his auxiliary fan was acting the same way by doing a little jump/jolt when
connected, like it was going to run but suddenly stopped. He than bought
a new fan which worked perfectly. By the way I'm a little curious now bcoz
you claimed having a new fan and it doesn't turn on when the A/C kicks in.

That made me wonder now if I ever buy this expensive auxiliary fan would it be the same for me to not able to turn on when my A/C kicks in???
This fan is like a mystery, where a few cars comes with it, but a few of
them don't have it, and they're still working fine without changing the air
temperature specially when sitting at the traffic or red lights.