1G Mishimoto fan wiring

[AWD-Tony]

Replacing my stock radiator with this used Mishimoto with dual fans. Does this wiring look right? I’ve read you should run a separate relay for the drivers side fan. Your thoughts please.

Thanks
Tony

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[DSMPT]

Replacing my stock radiator with this used Mishimoto with dual fans. Does this wiring look right? I’ve read you should run a separate relay for the drivers side fan. Your thoughts please.

Thanks
Tony

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Yes, the wiring is right. but I recommend you to use a relay for each. Otherwise you would probably keep blowing the fan fuse often. That is what happened when I did the same wiring.

 

[dustyboner]

couldn't you just wire each fan to the stock wiring and run off the stock relays?

radiator fan
(+) blue/red
(-) blue/black

condenser fan
(+) blue
(-) black

 

[DSMPT]

couldn't you just wire each fan to the stock wiring and run off the stock relays?

radiator fan
(+) blue/red
(-) blue/black

condenser fan
(+) blue
(-) black

I think the OP meant the wiring for dual radiator fan setup.

 

[AWD-Tony]

Thanks guys!! Just finished the install and bleed the system. Tight fit but both fans turn on. They cycled twice. I’m going to take it for a spin.

I read many threads to run a separate relay. I will update if my car and I both blow a fuse.

Thanks again!!

 

[dustyboner]

From your picture it appears that you aren't running a fan shroud. Maybe you are and it just wasn't in your pic.
Either way i'll just throw this out there:

-- the radiator core is roughly 3 square feet
-- with (2)12" fans -- no shroud: will only move air thru 1.70 square feet of the core (57%)
-- with the same 2 fans and a fan shroud, airflow will be thru just about 100% of the core

 

[AWD-Tony]

From your picture it appears that you aren't running a fan shroud. Maybe you are and it just wasn't in your pic.
Either way i'll just throw this out there:

-- the radiator core is roughly 3 square feet
-- with (2)12" fans -- no shroud: will only move air thru 1.70 square feet of the core (57%)
-- with the same 2 fans and a fan shroud, airflow will be thru just about 100% of the core

I’m not running a shroud. You’re right but like most, I only had the p/s fan on the stock radiator and never had an issue. That’s 50%. Each slim fan pulls 1100 cfm compared to the stock p/s which pulls 1600 cfm, so I think I’ll be good. Guess time will tell. It’s not that hot today here so won’t really be able to tell. Next hot day I’ll see how she does locally.

 

[dustyboner]

I wasn't meaning there was anything wrong with your setup.
It was just something to think about.

 

[AWD-Tony]

I wasn't meaning there was anything wrong with your setup.
It was just something to think about.

Got yah Boner! I appreciate the input!

 

[Mitsi1991]

Thanks guys!! Just finished the install and bleed the system. Tight fit but both fans turn on. They cycled twice. I’m going to take it for a spin.

I read many threads to run a separate relay. I will update if my car and I both blow a fuse.

Thanks again!!

Hey im actually doing the same thing! Did you have to put on relays or plug in and go? Cause this is literally the only forum I have found that has any kind of indication on how to wire these

 

[1990TSIAWDTALON]

That last post was 5 years ago, just fyi.

 

[motomattx]

If you are running the fans separately, as in one fan per plug that can run independent of the other fan, then you would only need to wire them in to the factory plug as they were when they were new, making sure that the fan runs the right direction so that the air is being pulled from the front, wiring them backwards will allow the fan to run the other direction. If you are trying to have both fans come on at the same time, you are wise to add a single large relay to run both fans so that you aren't drawing too mush amperage through a single circuit, doing that could leave you with blown fuses or short lived factory relays.

 

[Mitsi1991]

If you are running the fans separately, as in one fan per plug that can run independent of the other fan, then you would only need to wire them in to the factory plug as they were when they were new, making sure that the fan runs the right direction so that the air is being pulled from the front, wiring them backwards will allow the fan to run the other direction. If you are trying to have both fans come on at the same time, you are wise to add a single large relay to run both fans so that you aren't drawing too mush amperage through a single circuit, doing that could leave you with blown fuses or short lived factory relays.

I've been doing some research. If you want both fans to come on at once its best to just buy the relay kit. But I've had others saying I can wire them up separately and just run off OEM relays. The passenger side is straight forward, it's the driver side that isn't. Being the condenser fan. With it having 4 wires rather than 2. Not sure if that gold piece on the OEM fan is needed or its purpose?

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[motomattx]

The driver side fan is a two speed fan, the gold piece is a resistor to slow it down for the low speed setting, its not needed if you just want to run in on full speed all the time.

 

[Mitsi1991]

If you are running the fans separately, as in one fan per plug that can run independent of the other fan, then you would only need to wire them in to the factory plug as they were when they were new, making sure that the fan runs the right direction so that the air is being pulled from the front, wiring them backwards will allow the fan to run the other direction. If you are trying to have both fans come on at the same time, you are wise to add a single large relay to run both fans so that you aren't drawing too mush amperage through a single circuit, doing that could leave you with blown fuses or short lived factory

The driver side fan is a two speed fan, the gold piece is a resistor to slow it down for the low speed setting, its not needed if you just want to run in on full speed all the time.

My Eclipse doesn't have a/c anymore and probably never will again. But I don't want to blow fuses by wiring the whole thing to one relay so usually if I need both fans I just click on the a/c.

So basically from what your saying I can just bypass that resistor as a whole and just use the two wires going to the fan motor

 

[motomattx]

The driver side fan is a two speed fan, the gold piece is a resistor to

My Eclipse doesn't have a/c anymore and probably never will again. But I don't want to blow fuses by wiring the whole thing to one relay so usually if I need both fans I just click on the a/c.

So basically from what your saying I can just bypass that resistor as a whole and just use the two wires going to the fan motor?

Thats correct.

 

[Mitsi1991]

If you are running the fans separately, as in one fan per plug that can run independent of the other fan, then you would only need to wire them in to the factory plug as they were when they were new, making sure that the fan runs the right direction so that the air is being pulled from the front, wiring them backwards will allow the fan to run the other direction. If you are trying to have both fans come on at the same time, you are wise to add a single large relay to run both fans so that you aren't drawing too mush amperage through a single circuit, doing that could leave you with blown fuses or short lived factory

The driver side fan is a two speed fan, the gold piece is a resistor to slow it down for the low speed setting, its not needed if you just want to run in on full speed all the time.

My eclipse doesnt have a/c anymore and probably never will again. But I dont want to blow fuses by wiring the whole thing to one relay so usually if I need both fans i just click on the a/c. So basically from what your saying I can just bypass that resistor as a whole and just use the two wires going to the fan motor

The driver side fan is a two speed fan, the gold piece is a resistor to


Thats correct.

Here we are. Spliced and soldered with some heat shrink. Covered up the wires a few times to protect them and clean it up a bit.

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