will pay to show how to hook up electric fans wire - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

westly7 · 03-15-2010, 11:24 PM

took off clutch fan and installed cx racing aftermarket fans and shroud.
now i see bunch of thread that in order to make this fans working ppl use switch or put it together with altenator or fuel pump that makes the fans worn out bc on all the times.
i want the fans on automatically from my stock thermostat not the aftermarket one (put in the middle of rad).
i did try to hook the 12v wire from electric fans to relay RAD FAN HI (white with red stripe wire) and RAD FAN LO (brown wire) that located under the fusebox ,but nothing happened and fans dont work.

if anybody could tell me which wire should i hook that 12v (fans) to or at least what should i do to make my fans working automatically I WILL PAY A REASONABLE AMOUNT.the reason i do this bc i dont have time to bring my car to shop and i think its more fun to do it by myself bc i treat my car nicely.
i hope nobody bitching about this thread bc i've been looking but didnt find anything beside switches,fans on all the time or aftermarket thermostat
my car is 95 240sx(zenki) with sr20 blacktop from s13. thanks

Couped_up'd · 03-15-2010, 11:34 PM

I usally wire mine to the radio power wire...its switched 12v power.

westly7 · 03-15-2010, 11:42 PM

Quote:

Originally Posted by Couped_up'd

I usally wire mine to the radio power wire...its switched 12v power.

then they will keep on right? im afraid that the fans will worn out so fast..i need some suggestion here

Sileighty_85 · 03-16-2010, 12:11 AM

I wired my two fans up (each having a seperate relay) so when the car is turned to "ON" the fans start up.

Ive been running that way for over 3 years with out a problem.

midnight_rex · 03-16-2010, 12:14 AM

wow. go to a autoparts store and buy a fan switch. forget about using the factoring relays. have a seperate sensor taped in the coolant system and run its own relay. it only cost about $20. thats how i got mine going.

p.s. expand your imagination and do MORE research.

wiggafly808 · 03-16-2010, 12:20 AM

I just spliced mine to my ignition wires.. keys in accessory = fan on

Iirc, green is your accessory wire (splice the red on the fan to this wire) and ground the other side. (this is for an s13 though, havent had an s14 for years)

Sileighty_85 · 03-16-2010, 01:07 AM

Quote:

Originally Posted by wiggafly808

I just spliced mine to my ignition wires.. keys in accessory = fan on

Iirc, green is your accessory wire (splice the red on the fan to this wire) and ground the other side. (this is for an s13 though, havent had an s14 for years)

Thats a great way to set your car on fire.

OP you need two Relays around 30 Amp Relays, thick enough wire(cant remember the gauges right now) and wire them like this.
This is how i have mine wired.

Also i forgot to add the Fuse's in the diagram they should be placed in between the Battery and the Relays

westly7 · 03-16-2010, 01:28 AM

okay sileighty 85 since you put an easy reading diagram i might gonna try it tomorrow.
does anybody here that using e-fans need to adjust your idle screw? i noticed mine after e-fans installed (straight to batt lol) and drove around,my idle drops right after i clutch or braking then go back to normal,is that normal or what? should i adjust the idle or any folks here have ideas.thanks

g6civcx · 03-16-2010, 09:25 AM

Quote:

Originally Posted by westly7

together with altenator or fuel pump that makes the fans worn out bc on all the times

Plus you overload the alternator or fuel pump circuit and blow fuses, or start fires.

Quote:

Originally Posted by westly7

i want the fans on automatically from my stock thermostat not the aftermarket one

Will the fan be on with ignition or not? Can the fan turn on and off by itself without the key in the ignition?

Quote:

Originally Posted by westly7

i did try to hook the 12v wire from electric fans to relay RAD FAN HI (white with red stripe wire) and RAD FAN LO (brown wire) that located under the fusebox ,but nothing happened and fans dont work

You did not use the relays properly.

Quote:

Originally Posted by Couped_up'd

I usally wire mine to the radio power wire...its switched 12v power.

The radio is only fused for 15A. The CX Racing fans operate at 7.5 nominally, but can spike up to 10-15 A. If the fans and the radio are both on at the same time, you'll blow fuses or start a fire.

westly7 · 03-16-2010, 03:09 PM

g6civcx please correct me if im wrong but there were 4 wires in every relay (hi or lo), 2 small and two big. i assumed that the two small one to kick up the relay and the big wires one from power 12v (brown) and the other one to continue power from 12v to device/fan(white with red stripe),so i did put the wire for the fans to the big one (white with red stripe) and nothing happened to fans beside get overheat

ADiamond240sx · 03-16-2010, 04:18 PM

I have due fans on mine and wired the main one up to a thermal sensor relay with an override to the second relay going to the ECU and the second fan hooked up to the first relay. This way the car cools properly and the AC fan comes on when it should. Furthermore, if the thermal sensor fails the second relay will override it and prevent the car from overheating. Furthermore, the thermal sensor is hooked up to constant power which allows the fan to cool the car down for a few minutes after the car is shut off. It works great. I know on the KA there are two relays for low an high speed for the stock AC fan. If the SR has the same thing just use those relays and install a temp sensor with relay that can be overridden by external power.

Cliffnotes

Fan one: Thermal sensor with relay that has override which is connected to second stock relay.

Fan two: Hooked up to first stock relay.

artman540 · 03-17-2010, 05:19 PM

people always make this one so much harder than it needs to be. take the plug off of your a/c fan, splice the e-fans into that plug, plug it back in. your a/c fan turns on at the same time as the clutch fan. i've been running like that for a year no problems.

ADiamond240sx · 03-17-2010, 05:45 PM

Quote:

Originally Posted by artman540

people always make this one so much harder than it needs to be. take the plug off of your a/c fan, splice the e-fans into that plug, plug it back in. your a/c fan turns on at the same time as the clutch fan. i've been running like that for a year no problems.

You've been running a little hot then. The AC fan only comes on to boost the clutch fan or when the AC is turned on. Read the FSM, you'll notice that the temperature required to trip that relay is higher than the optimum running temperature specified in the FSM.

westly7 · 03-18-2010, 08:53 AM

Quote:

Originally Posted by artman540

people always make this one so much harder than it needs to be. take the plug off of your a/c fan, splice the e-fans into that plug, plug it back in. your a/c fan turns on at the same time as the clutch fan. i've been running like that for a year no problems.

too bad when shop did my sr swap somehow i cant find where the plug for a/c fan

.

artman540 · 03-18-2010, 03:10 PM

i believe the clutch fan comes on at 180 and the ac fan comes on at 190 my temp gauge stayed exactly the same. and if you have a performance radiator and a nismo tstat as most people do, whats the problem?

ADiamond240sx · 03-18-2010, 04:01 PM

Quote:

Originally Posted by artman540

i believe the clutch fan comes on at 180 and the ac fan comes on at 190 my temp gauge stayed exactly the same. and if you have a performance radiator and a nismo tstat as most people do, whats the problem?

According to FSM the first relay trips at 203 and the second relay trips at 212. For the S14 its on page EC-205. You are thinking of when the thermostat begins to open and when it is fully open. Car is supposed to run at around 175-180. If you are using the clutch fan why the hell even install dual electric fans?

The problem is if you live in a hot area or plan on actually beating on the car at all you are going to consistently be running hot as the fans will not come on and actually cool the car down until it is above its operating temperature. Ya dig? Furthermore, if you actually trust the accuracy of the stock gauge you are making a mistake. It can basically tell you if you are running stupid hot or stupid cold ... other than that its not very accurate.

03-15-2010, 11:24 PM	#1
westly7 Zilvia Addict Join Date: Jun 2009 Location: Dallas tx 75243 Age: 38 Posts: 739 Trader Rating: (18) Feedback Score: 18 reviews	will pay to show how to hook up electric fans wire took off clutch fan and installed cx racing aftermarket fans and shroud. now i see bunch of thread that in order to make this fans working ppl use switch or put it together with altenator or fuel pump that makes the fans worn out bc on all the times. i want the fans on automatically from my stock thermostat not the aftermarket one (put in the middle of rad). i did try to hook the 12v wire from electric fans to relay RAD FAN HI (white with red stripe wire) and RAD FAN LO (brown wire) that located under the fusebox ,but nothing happened and fans dont work. if anybody could tell me which wire should i hook that 12v (fans) to or at least what should i do to make my fans working automatically I WILL PAY A REASONABLE AMOUNT.the reason i do this bc i dont have time to bring my car to shop and i think its more fun to do it by myself bc i treat my car nicely. i hope nobody bitching about this thread bc i've been looking but didnt find anything beside switches,fans on all the time or aftermarket thermostat my car is 95 240sx(zenki) with sr20 blacktop from s13. thanks

03-16-2010, 12:11 AM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	I wired my two fans up (each having a seperate relay) so when the car is turned to "ON" the fans start up. Ive been running that way for over 3 years with out a problem. __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

03-16-2010, 04:18 PM	#11
ADiamond240sx Join Date: Aug 2006 Location: Houston Age: 45 Posts: 40 Trader Rating: (0) Feedback Score: 0 reviews	I have due fans on mine and wired the main one up to a thermal sensor relay with an override to the second relay going to the ECU and the second fan hooked up to the first relay. This way the car cools properly and the AC fan comes on when it should. Furthermore, if the thermal sensor fails the second relay will override it and prevent the car from overheating. Furthermore, the thermal sensor is hooked up to constant power which allows the fan to cool the car down for a few minutes after the car is shut off. It works great. I know on the KA there are two relays for low an high speed for the stock AC fan. If the SR has the same thing just use those relays and install a temp sensor with relay that can be overridden by external power. Cliffnotes Fan one: Thermal sensor with relay that has override which is connected to second stock relay. Fan two: Hooked up to first stock relay. __________________ Rebuilding it one bolt at a time. Got any spare bolts?

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03-15-2010, 11:34 PM	#2
Couped_up'd Zilvia FREAK! Join Date: Feb 2009 Location: Candy Mountain Posts: 1,119 Trader Rating: (47) Feedback Score: 47 reviews	I usally wire mine to the radio power wire...its switched 12v power.

03-16-2010, 12:14 AM	#5
midnight_rex Zilvia Member Join Date: Jul 2008 Location: houston, tx Age: 34 Posts: 239 Trader Rating: (1) Feedback Score: 1 reviews	wow. go to a autoparts store and buy a fan switch. forget about using the factoring relays. have a seperate sensor taped in the coolant system and run its own relay. it only cost about $20. thats how i got mine going. p.s. expand your imagination and do MORE research.

03-16-2010, 12:20 AM	#6
wiggafly808 Zilvia Junkie Join Date: Feb 2008 Location: Corvallis, OR Posts: 346 Trader Rating: (11) Feedback Score: 11 reviews	I just spliced mine to my ignition wires.. keys in accessory = fan on Iirc, green is your accessory wire (splice the red on the fan to this wire) and ground the other side. (this is for an s13 though, havent had an s14 for years)

03-16-2010, 01:28 AM	#8
westly7 Zilvia Addict Join Date: Jun 2009 Location: Dallas tx 75243 Age: 38 Posts: 739 Trader Rating: (18) Feedback Score: 18 reviews	okay sileighty 85 since you put an easy reading diagram i might gonna try it tomorrow. does anybody here that using e-fans need to adjust your idle screw? i noticed mine after e-fans installed (straight to batt lol) and drove around,my idle drops right after i clutch or braking then go back to normal,is that normal or what? should i adjust the idle or any folks here have ideas.thanks

03-16-2010, 03:09 PM	#10
westly7 Zilvia Addict Join Date: Jun 2009 Location: Dallas tx 75243 Age: 38 Posts: 739 Trader Rating: (18) Feedback Score: 18 reviews	g6civcx please correct me if im wrong but there were 4 wires in every relay (hi or lo), 2 small and two big. i assumed that the two small one to kick up the relay and the big wires one from power 12v (brown) and the other one to continue power from 12v to device/fan(white with red stripe),so i did put the wire for the fans to the big one (white with red stripe) and nothing happened to fans beside get overheat

03-17-2010, 05:19 PM	#12
artman540 Join Date: Jun 2009 Location: Kissimmee, FL Age: 35 Posts: 6 Trader Rating: (0) Feedback Score: 0 reviews	people always make this one so much harder than it needs to be. take the plug off of your a/c fan, splice the e-fans into that plug, plug it back in. your a/c fan turns on at the same time as the clutch fan. i've been running like that for a year no problems.

03-18-2010, 03:10 PM	#15
artman540 Join Date: Jun 2009 Location: Kissimmee, FL Age: 35 Posts: 6 Trader Rating: (0) Feedback Score: 0 reviews	i believe the clutch fan comes on at 180 and the ac fan comes on at 190 my temp gauge stayed exactly the same. and if you have a performance radiator and a nismo tstat as most people do, whats the problem?