auto electric cooling fan WIRING how to DIY
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- Опубликовано: 30 сен 2024
- just an idea on how to wire up electric cooling fans for your vehicle
COOLING FANS: amzn.to/377kLRP
those fans fit perfect on 68-72 GM A Body cars but are not recommended for LS engine swaps ... these pull like 5000 cfm together.. but I also run a desert cooler 4 row 
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Ohhh...wait a minute.....Think I just found one of your vids on fusebox. You have now reached SUPER GANGSTA STATUS. You are the man!!! Thanks again!!!
Would you share a link to it please?
First
Brilliant .... in the first 90 seconds you explained how to use the sensor to ground and switch the relay. I’ve watched ten clips without one explaining that! Thank you CC 👍
Bro this is literally the best RUclips instructional video on here... I already knew all this stuff but I never could have put it together for the people like this... make more videos
Not usually a RUclips commenter, but that video was INCREDIBLY well done. Thanks for the work!
When I watch your videos I feel like a mechanical electrician, thank you :)
Chris, I appreciate your instructionals. Really down to earth and easy/simple to understand. Thank you.
Great video. I might need to watch it a couple more times to get it exactly but this exactly what I needed
Google the wiring harness and save picture
Dude....that video was gansta!!! That was one of the Best diagrams I've seen in a very long time. Keep up he good work. Now... If you can do a diagram of wiring up a fuse box in a 1969 pontiac firebird. That would be SUPER GANGSTA!!!. Thanks again.
If the 180 temp sensor failed will the 200 temp sensor still work?
Yes
Peace- thanks. I’ve been doing this for years, but your explanation was one of the best ways I’ve ever seen! Appreciate your efforts & time.
Hey Chris, thanks for taking the time to do this. You made me understand very clear. I subscribed 👍
I did the 2 speed with 3 relays this video was as clear as it gets I have no wiring skills what so ever and I have to admit it came out pretty good
Did the fans burn out doing the low speed?
I saw this video has been out for a while, but Dayum!!! Great content.
How would you wire a three relay, two speed Taurus fan to Holley Terminator?
I have a 3 relay kit I bought years ago fro Hollister Road .com. I used a 2 temp sensor from a BMW, but removed it since Holley can now control the fans. This relay kit kicks low on gradually (180°) and then shuts off the low if the Hi turns on (195°). Once Hi cools down to 180° it will turn off and then the Low will turn back on.
Any suggestions on how to connect this to Holley?
@chriscraft77022 Man I have gone over this video several times in hopes of running my dual fans at 1/2 speed. I have an Entropy Dual fan radiator. I can only get one fan on but when I run power direct to the fan that doesn’t engage it fires up. I even ordered new relays. Using step 1 for low speed still only one fan and it’s number 2 fan. I can hear relay one click but no luck. Wonder if I should invest in a controller?😮
Chris, I've been working with your layout for the two speed fan set up. I just discovered the BMW 2 temp switch, and that is how I'm going now. I am using 3 relays, as you did, middle one SPDT. 1 and 3, SPST. I am running switched 12v power to the BMW switch. From that switch, I am running the low temp wire to terminal 86, on relay #1. The high temp signal to 86, on both relay #2. and #3. #85 on all 3 relays go to ground, and #87 on relay #2 goes to ground. I hope I have it right, 'cause it even makes sense! Thank you for your help.
Hey Chris , You definitely seem to be the guy that I need to speak to! The funny part is, in the late 90's, early 2k's, I used to know how to wire up relay's! Massive injury & years later, A...I don't remember how anymore! & B... I NEED TO KNOW HOW BECAUSE, On my 03 focus se, dohc zetec vin-3, MY COOLING FANS DO NOT OPERATE!!! I HAVE DONE EVERYTHING IMAGINABLE! I changed the cylinder head temp sensor, cooling fan solenoid, relays, checked the fuses, even ran power to the fans & THEY SPUN PERFECTLY! I NEED YOUR HELP! my focus has about 4 relays for the fans & some fuses. I really hope you can help! also, when I disconnect the cylinder head temp sensor, the fans run constantly but, will fry my alternator! 3 alternators later, I NEED HELP! ON MY HEAD TEMP SENSOR, I TESTED IT WITH THIS CHEAP MULTIMETER & I BELEIVE IM GETTING 12V ON 1 WIRE & 5V ON THE SECOND WIRE. I AM GOING TO TRY RUNNING THEM EACH TO A TOGLE SWITCH & TRY TO CYCLE THEM THAT WAY BUT, BY BREAKING THE CIRCUIT, WHEN THE FANS COME ON, THE TEMP GUAGE STOPS WORKING SO, I WILL NOT BE ABLE TO SEE MY TEMP WHEN THE FANS HOPEFULLY RUN. I DONT HAVE THE MONEY RIGHT NOW TO ORDER NEW FANS, TO SEE IF THAT IS THE FIX SO, I NEED TO TRY SOMETHING ELSE & YOU SEEM TO KNOW EXACTLY WHAT YOUR DOING. ITS EARLY MORNING NOW BUT, I THINK MY RELAYS ARE THE "TRAIN TRACK SET UP THAT YOU DID WITH 87A. I AM GOING TO CHECK OUT YOUR CHNL & SUBSCRIBE! I NEED THE HELP!!!!!!!!!!!!!
Hi Chris...Wow...aw some video..need help...98 Lincoln 4.6...A/C compressor clutch disintigrated...removed compressor replaced with a/c bypass kit...now the electric cooling fan runs all the time even when ignition is off...even when engine is cold...drains battery dead...any remedy...Thanks...
MR. CHRIS CRAFT, PLEASE GET IN TOUCH WITH ME, I HOPE THIS MESSAGE GETS TO YOU, I WOULD LIKE TO PURCHASE A SCEMATIC FROM YOU THAT ONLY YOU CAN CREATE FOR MY CAR, I AM 80 SO I DO NEED YOUR HELP. THANKS. i would call but have no idea how to get in touch. MR.NEWTON.
Hello sir, I am a new friend from Iraq. Can I ask a master about a computer or a railroad fuel tank? What is the petrol pump? How do you work for seconds to Nozel and then stop? And when the engine is running, your work is working. Is there a map or have video for study and I am thankful to you, sir? I have a Ford car. I have a Ford car. Mercury 1989 The Vetem works without interruption only when opening a fence.
I really like the 3 relay setup, is that how Nelson Preformance harness is made? And big question, do you know if the Dakota pac-2750 controller will work with the 3 relay setup? It has the two negative pin low and high setup, but they show it on a two relay setup where one fan goes on high at low pin, the other fan goes on high at high pin. Really need to know!! Thankyou for sharing this video.
Hey, thanks for the video, but I got the other fan controller, for the Flexalite 180. I got it wired in the way the instructions say to, and the fan still won't come on. Anyway you can do a video of that controller?
can i use one sensor {the bmw 180/196 temp} to control both high an low temp speeds sence it is a seperate internal switch ? trying to over ride the hi temp from factory, as longas i can keep temp at reasonable level temp, the car does just fine.? really like your show, thanks, at 80 yr old ,need the help.
Thank you for the good information. I learned a lot from you. Thank you so much.
Great video. Never knew about the 2 speed and was about to gamble on the Derale which has horrible reviews. I have their version of your FL210 (have had them also worked for many years). The ones have now pull just under 25 amps ea and had issues w every auto controller ( Hayden 👎🏻) so just had manual switch’s to HD relays but I’ll be adding one more to slow them down. I’ve sucked one to many birds into my grill on high😂🤦🏻♂️
Hey Chris, I need to put an override on/off toggle switch on the + wire coming out of my electric fan.
I'm wanting to connect it there because it's after the thermostatic switch that detects hot Temps in radiator so the fan turns on at 205°F. So it doesn't effect the fan temp switch and can just manually turn on the fan when I'm setting in stop n go traffic or have AC on while idling.
I was going to power the on/off toggle switch from the fuse box under dash so it only has power when key is on or car is running. The on/off switch is on the positive line that goes to the fans + wire.
How do I connect a relay to this while not effecting temp switch turning on fan when hot and still have the ability to send power to fan from manual toggle switch independently but switch only being power by key on
Rewirng my whole car. Watched a lot videos on wiring different things and now that I have found Chris Craft he is the go to guy. Speaks clearly to the point. Thanks Chris
help my.. i have escudo car.. but ac not operation i cek relay fan and magnetic cluth is oke but voltage to wire fan and magnetic clud zero...fuse and relay oke...i have solution problem...
Great video, really appreciate your time creating this video!!
I install mine in minutes after reviewing your video.
I never knew running fans in series cuts the speed in half. I usually run one fan with a 3ohm resistor for low speed. I've used flexalite in the past don't much like them. There whicked expensive I've spent 400 on a fan setup that's nuts when you can get a better fan setup from a salvage yard for next to nothing. That fan controller you have is crazy priced a few relays neatly packed fuck that.
What’s up brother, I added my fans in everything seem right into this morning my battery was dead what do you think could be the cause?
Hi Chris i used your two speed wiring diagram I have a problem, from the ignition i have the fans on low speed the fans work fine but on hi speed i only have 1 fan running full speed what did i do wrong thks
Thanks so much for posting this Chris. I also installed the two speed, three relay option on my 76' Ford truck. I used three 16" fans two pushers and one puller with a shroud. The trucks stays on low speed with all three fans most of the time and you can barely hear them running. The high speed kick in however, is a different story. I used a dashpot from a 79 carb which is wired to the middle relay 87a and kicks my idle speed up when the three fans go to high speed. I also ran 86 on the first relay to the ignition switch and the fans turn off with the key. Thanks again!!
What can I say that hasn't already been said; thank you Sir.
thanks chris hope you staying dry during this flood man
You say; Don't put these kill switches in your car ? Why ? I'm already doing it.
Perfect video! Great explanation. I dont typically leave comments. But when they help me out this much i feel obligated. Great job man
CAN YOU IMAGEN HOW IMPORTENT GUYS LIKE YOU ARE GOING TO BE WHEN THE ELECTRIC CARS ARE GOING TO HIT THE STREETS, GEAR UP , GET READY , YOU WILL HAVE MORE THAN YOU CAN HANDEL, NOT THAT YOU DO NOT ALLREADY, ME O I AM A MODEL "T" MAN , AN OLD RELIC, THANKS HA HA HA, HAVE A GREAT THANKS GIVEING AN GOD BLESS.
This is as good as is going to get explaining I watched professionals explain it and I couldn't get it you simplified everything as simple as it can be I give you AAA+
i was wondering what would you recommend on wiring an AC unit so the fans come on with the AC ? do i run them parallel of the ac unit or should i set them up with there own relay also i want to put a bypass switch in in case i need to keep things cool thanks Bill
How are controlling the fan starting on temp ? I want turn mine on 195°. Thanks
Sometimes the sensores, has a negative by-pass allways ON by default.
Thanks man I love you 😁 I spend 4 month trying too do these way 2 speed vans thanks
Nice presentation. Thanks for taking the time.
in your hi speed / low speed diagram , how an where would i wire in the bmw switch with 180 degree an 196 degree temp
Good explain I like your video thank you so much 👍👍👍👍👍💯💯😎
How would tweak this 2fan 3relay 2speed setup for a 1fan that is dual speed ?
Can a Bosch 044 twins run with this type of setup one fuel pump and then both at the same time the way u have this setup
Fan turns on only when air conditioning is on. Temp sensor has been replaced. Any ideas.
Is not a comment sorry is a question
How yuo connected 2 tps together is on hay squeeze
What about when you turn on the AC, does that trigger the AC fan or both fans on low atleast?
How can I connect a cooling fan that runs in negative output and using a thermoswitch?
Will you tell me what cooling fan controller would be best for my 03 focus se, dohc zetec vin-3. it has 2 fans, 1 is a/c but, might spin also for low speed or again in high speed? idk? I need to know which one is my cooling fan because my A/C DOESN'T WORK ANYWAYS. I JUST NEED MY COOLING FAN TO WORK! I planned on disconnecting the a/c fan & running a toggle or 2 on my head temp sensor wires(2 wires- 1 is 12v & the other is 5v reference I think?) to make the fan run, so, if I find out which is the cooling fan & which is the a/c fan, I will disconnect the a/c fan & run toggles on the cylinder head temp sensor wires to make the fan run 4 now. I REALLY HOPE YOU CAN HELP ME OUT?
if your AC does not work ONLY!!!!
try this first.. jump the ac pressure switch and turn on the ac in the dash and see if the 2nd fan comes on like that
Can I run a 12v fan with 12v Key on power without the relays?
if i need the fan also works with a/c how to do it in this set up . thanks
I have a part 2 cooling fan video
@@chriscraft77022 thanks man you helped me a lot 👍
your vids are on point Thank you AGAIN lol
I was wondering if you could clear something up for me. Wouldn't using a 4 pin relay work the same way as using a 5 pin relay, being that you wouldn't have the need to use the extra wire going into 87a. My understanding is 87a is just a "rest" you could say, before the connection is established between 30 and 87. In other words, what purpose does the wire going into 87a have?
On a 5 pin power is either going to 87a or to 87 ( think high beam and low beam headlights) sort of a single pole double throw ... 4 pin is just a single pole single throw switch.. people use a 5 pin where they don’t need it so many times because they don’t know what they are doing .. like all over RUclips
Im a Big fan man. I was wondering if you can help me. I installed a 1980s Ford Taurus in my 68 camaro. I have a 30amp circuit breaker 70amp relay. The fun takes about 40/60amp to kick on on high speed i connect the the fan on high speed only not low speed. Is it normal that the relay heats up ? If i touch it it’s little hot. I have the same relay in my chevelle with dual fans the relays in the chevelle don’t heat up as much. The fans in the chevelle take 30amp
I would check the grounds out first... watch my grounds explained video if you don’t know about them... a bad or undersized relay gets hot .. or bad grounds
If the 86 and 80 i using direct from fius and 85 i do the switch can or not ??
Hey Chris great video. I'm trying to figure out how to wire the intrepid fans(98-04) in my s10 I would like to the 3 relay setup with the bmw dual temp switch, I can't find any accurate info on how many amp the fans pull, is there a way I can figure that out
if you are gonna run the 3 relays wire it just like I did... they only sell 30 amp relays and breakers at the parts store.. 10g wire... all that stuff I bought from oreilly and it was all on the shelves.. I’m actually running the bmw switch just haven’t made the video yet.. have you looked into the alternator upgrade? that’s your next problem
I can’t see how fan #1 will run if (like your diagram shows) you wire it to terminal 30 on the second relay. There’s no path to ground. Am I missing something ? Wouldn’t they both relays have to be energized in order for a ground patch to exist ?
i run the fans in the video... I show where the grounds are...
those flexalite fans are 410 part number.. the 420 are the same but dont come with the VSC controller
Really helpful! I narrowed down the problem on our car when the right fan would never work. Turned out to be the fan itself. Thank you for this video!
I know I'm electrically challenged, but I still can't wrap my head around why the switch works on the post-relay side of the circuit, vs. being on the pre-relay side. It seems like it would need the toggle switch on the pre side to allow the positive charge to hit the relay and trigger the switch. Does this make any difference having the charge waiting at the relay? Cool video and detailed explanations!
post and pre? i have an automotive relay explained video.. check it out..
the only thing that im lost in is the ignition wire! where do i connect it too?
This video helped me out alot with my 69 Camaro. But is there a way I can wire them in so #1 kicks on at 180 by its self and #2 kicks on with #1 at 200 and and have the AC kick both on at once when needed??
I have a part 2 wiring relays
I am running a additional fan infront or the car. Can I just connect 85 to ground and 86 to current fan +. That should activate the extra fan right. ? Or should I run a.separate switch
yes, like that if you want
thanks , I have a Suburban 2012 and I want both fans on high speed all time by 4 relays 5 pins can you show the diagram will be thanks in advance
you only need (1) 4 pin relay for that.. but the amps might make that relay expensive
hello I have a Suburban 2012 and I want both fans working on high speed by 4 relays with 5 pins every one 40 amper and one breaker fuse 80 amper how the diagram will be thanks in advance ?
🐸
Instead of connecting the low speed trigger to a thermo switch, can I connect it to the AC compressor so that the AC compressor will activate low speed and the high speed will be activated by a 200deg thermo switch?
if you are doing AC you need that Trinary switch.. I have never wired in AC so I was just guessing
Can you use a separate set of smaller fuse and wire gauge going to 86. And from 85 to your temperature sensor to ground? Not much amperage draw in that circuit compared to both fans.
yes, use 16-22 gauge
Please i got a problem of relay to fan ,only single
how to wiring a single fan with low and high speed???
Very good video for more understanding on car relay fans
Can someone explain to me what the benefit to having the fans come on in stages like that, rather than both on at the same time? i.e. why wouldn't you just have them both came on at 180 and shut off at 170, rather than the second one come on at 200?
because they pull 50 amps when they both come on at the same time.... thats why.. and.. you dont always need both fans on.. 1 fan on can keep you good until you get on the throttle..
Very well explained. Gonna do the two speed setup on my car
Great video, I see you have two fans and using one Flex a lite controller on the setup. Will this one controller handle the amps from the two fans or is best to have two controllers on two fan setup. Once great information channel.
it is sold like that.. that is a fan kit
Could I run 86 hot and a switch on 85 to ground?
Nice explanation, but i didn't like about your video is you constantly bumping the camera making it shake. that is annoying.
🍪🍪🍪🍪🍪🍪🍪🍪
Thanks for this video. Great instructions and perfect execution. Both real life application and written down. You nailed it, my avalanche is forever in your debt. Stupid clutch fan 👿
ادري واحنه شنو شفنه من الترجمة 😮😮😮😮
Hey, im running 05 silverado fans using the 3 relay setup and I was wondering if my fan will run at half speed?
if you have 2 fans yes
sorry, trying to subscribed, not sure how.
Or does the switch have to run on 86 to ignition on
No matter how old this is..... when info is explained well like this video and IM NOT LOOKING AT SOMEONE DRIVING DOWN THE ROAD TALKING TO A CAMERA AND NOT DOING THE WORK OR UGLY SHOT OF THERE DOG OR BARFING FROM CAMERA SPINS.... the information is priceless.
thanks buddy.
Do you have a diagram for dodge intrepid fans ?
Awesome! I've never seen the Low / High setup like that! I'm going to try it out.
Thanks a lot for sharing
The best
Awesome! Thanks for taking the time to put this and your other relay video together!
This video is amazing. Thank you!
Hey Chris,
Your video on HI/Low fan control wiring is the best I've found anywhere. I do have one question though, how would I tie my ECM to this ? The ecm is a E38 and has a "fan 1" ground signal and a "fan 2" ground signal. I would like to have the ECM have control over the fans and use a vintage air trianary switch for like fan one, then for fan two use a 200° temp switch. Can I just wire one of each of the ground signal wires from the ECM to each relay in your diagram in place of the "180° " or fan one ?? And the other in place of the 200° Help a brother out man I'm struggling over here... lol
Second fan can be powered by the AC switch like a regular wiring harness.
Awesome video even if its was 2017, Thanks! My problem for my truck is that it won't turn on. Checked and replaced all the relays and controller. Even the coolant sensor. Now I'm stumped. Fan still won't turn on(the 2fans do work and the wiring). If I unplugged the coolant sensor, the computer thinks the engine is hot, both fans kick on. If I plug the wiring to the sensor back, the fans stop. I've recently replaced the thermostat too, the temperature reads correctly at 210. I can't find any solutions.
Chris, I'm trying to find information about how to install dummy LED indicator lights to my dash from my dual electric fans. I've been told to break into the hot wire on the fans . But, that's 25 amp at load. How would you recommend a safe wiring option? And thank you for so many awesome videos on wiring. I'm a grandma or three and rewiring my CJ7 for the first time all by myself. I really want to do this right! And your videos have been AMAZING!
how did you wire your fans to come on? Relays? What actually turns them on?
@@chriscraft77022 relays with trigger wires from sending units in block.
Hi Chris I have recently brought a 12volt 5 pin 100 Amp Relay unit & I was wondering if the 100 Amp Relay would suite a electric radiator cooling fan & the the electric fan that I will buying at a later date is a 90 Watt electric fan motor & the Electric Cooling Fan is 14" & has 2500 CFM from AliExpress Store for NZ $81.02 which I think it is a quite a reasonable price & I have a 1996 Toyota Hilux Surf with a 3.4V6 engine & what fan I have at the moment is those clutch fans & I dont like these fans at all & go all out for an electric radiator cooling fan & having 2500 CFM rating should be fine for the 3.4V6 engine & the fan 14" electric fan has curved fan blades however I asked the the Seller if you can get this 14" electric fan with straight flat blades & apparently you can buy this electric 14" with the straight fan blades which they are a lot better air flow than the curved bladed electric fans & however they are a little bit noisier than the curved bladed electric fans & that wouldn't worry me & the electric fan will draw air through the radiator which more efficient again than force air through the radiator from the front of the radiator & that way the electric fan will force air over the engine as well & keeping other engine components Cool as well & having the clutch fan removed I will have heaps of room for the electric fan as the clutch fan has a long piece of metal to mount the clutch fan from the water pump & so all I have to do is put shorter bolts through the water pump to hold the pulley on & that way I will have even more room again for the electric fan & more air going over the engine as well & keep everything nice & cool & be far better than those clutch fans & anything goes wrong with those clutch fans they quite expensive to replace as well & so Chris would a 12V 5 pin 100 Amp Relay work ok for this fan unit Kind Regards Peter
yes
Thanks Chris Kind Regards Peter
Has anyone tried this with a LS3 swap using the E38 ECM with fan 1 and fan two being the ground trigger for the relays ? It seemed to work fine but the ECM stopped sending ground trigger and threw DTC PO480... then both fans started running on hi on fan two request only. (@205°) I think its because the ECM is looking for voltages from the PWM fan module ??
this is not for that .. you need relays with diodes and they are wired different
@@chriscraft77022 yes sir, took me a couple months of screwing around but I have the relays, I have 3. Also sourced the solder in diodes in case I needed more. The older ECMs from GM was so much more simpler.. the E38 ECMs are definitely not for the faint of heart. I ordered a dual speed dual fan upgrade harness from racetronics and it should be here Thursday. It's also wired with the proper relays they claim. I just want to see for myself. This has been the biggest pain in the ass. I should have just went with the Holley system or ponied up for the Haltech system. GM clearly didn't like us hopping up their Engine management systems... lol
Good knowledge and good explanation sir
Are you using 10G from the breakers to relays also? Or just from battery to breaker?
all 10g for load circuit every time
A bit confused. My 2 fans are very tiny (5 inch)and will pull about 6.5 amps each.theyre for an oil cooler. Its gonna be 1 relay since they draw low amps. I have a 30 amp circuit breaker to 30 on relay and both fans are wired into 87.
So my question is would i be able to send power from the circuit breaker to 86 and have the toggle switch just be connected to the 85(ground)?
yes.. what on earth are you running that you need an oil cooler?
@@chriscraft77022 well shit thanks chris!
another small question. I got a water pump that draws 3.9amps. I want to wire a toggle switch onto that. Do you think its alright to just wire the switch into that without a relay since its very low amps? or do you recommend a relay for that?