Question about Mazda 626

1 Answer

Here what is probably a simple question to you experts.......on my car, my relay switch to my radiator's fan went, here's the deal... Radiator Fan has a positive and negative wire. Car battery has a positive and negative side. Toggle switch has a positive and negative side.. as you may have gotten the picture, how should the wiring go, in order for the toggle switch to control the power to the fan, until i can get the relay switch replace? (of course the desired result is to turn the fan on and off, at will)

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 3,489 Answers

To wire this properly, you want to run a grond to the frame somewhere and simply control the power side with the toggle. You will not hook the negative to any toggle. Make sure the toggle is rated to at least 30amp so you don't burn the switch. If you need anything else, please let me know.

Posted on May 13, 2010

  • 17 more comments 
  • wb_luv_2000 May 13, 2010

    ok, can you talk to me a little more on the elementary side? in order words, like in a wiring path.( example, from the fan, the positive and negative goes where, from the battery and switch, the same thing please)

  • Kori Policy
    Kori Policy May 13, 2010

    Okay. take the negative and attatch it to the hegative side of the battery or to the frame(which ever is easier for you). Take the positive and run one into the car from the battery, hook it to the toggle and then a wire out to the fan. All you need is a 2 prong toggle, but if it is a 3 prong, the power goes to the middle and the wire going to the fan will go to top or bottom(doesn't matter).

  • wb_luv_2000 May 13, 2010

    ok, let me see if i got this.......from what i just read,

    the positive from the battery, goes to the positive of the toggle switch and the negative from the

    toggle switch, goes to the negative of the fan.....

    if this is true, what is to be done to the negative side of the battery and the positive side of the fan?

  • Kori Policy
    Kori Policy May 13, 2010

    No. The negative goes to the battery or frame from the fan. Never to the toggle! The runs from the battery, to the toggle and back out to the positive on the fan. Picture the negative from the fan going directly to the battery. Then you are running a wire from the positive side of the battery to the inside of the car and to the toggle. From the toggle to the positive side of the fan. The switch simply connects the positive side only to turn the fan on.

  • wb_luv_2000 May 13, 2010

    ok, now , let me recap.pls be patient with me..

    BATT (Positive side goes to switch, negative side goes to negative to the fan)

    FAN( Negative side connected to batt negative side, positive side to toggle switch)

    SWITCH( Positive side to batt and to the fan...Negative side OPEN)

  • Kori Policy
    Kori Policy May 13, 2010

    Okay, I see where we are getting lost. I would rather be patient then to have you start a fire so, no problem and take your time. There is no negative side of the toggle. The toggle simply acts as a controlled break in the wire. So really you are only running one wire into the car and one out of the car. The negative is simply going from the fan to the battery. The toggle is the equivilant of taking 2 wires and touching them together to make the connection.

  • wb_luv_2000 May 13, 2010

    actually, that is what i just recapped.

    Batt pos into the car, to the switch pos.

    and then from the switch pos back outside to the fan pos, thus leaving the negative side of the switch, UNTOUCHED..

    THEN the BATT negative side to the fan's negative side....

  • Kori Policy
    Kori Policy May 13, 2010

    You got it! I'll be here if you have anymore questions.

  • wb_luv_2000 May 13, 2010

    i really do appreciate your help.....i'm rather new to this website and i see it can be very helpful..

  • Kori Policy
    Kori Policy May 13, 2010

    Well, I really do appreciate that. I can't personally work on cars or Military operations anymore due to a physical impairment. I love to teach so as long as people are receptive, I'm happy to help.

  • wb_luv_2000 May 13, 2010

    ohhhhhh, one more it has to be a 30 amp, or more toggle switch, CORRECT? if this is the case, i suppose that on a 2 prong switch, the ON, is pos and the OFF is neg............On a 3 prong switch, the Middle is the pos and either 1 or 3, should be UNTOUCHED.....

  • Kori Policy
    Kori Policy May 13, 2010

    On a 2 prong, just hook the fan side up to one prong and the power(positive) side up to the other. On a 3 prong switch, the power(positive)side will be in the middle and the fan(positive side) will be on either top or bottom. It doesn't matter just as long as you remember which way to flip it when you need the fan on. And again, just take a wire from the negative side of the fan and run it to the negative side of the battery. Yes you will want a switch rated around 30amp.

  • wb_luv_2000 May 13, 2010

    thank you very very much........gotta run now, got work to do. lol lol lol

  • wb_luv_2000 May 14, 2010

    hey, it's me again..i'm having one hell of a problem finding a 30 amp toggle switch...the highest i'm founding is 20 amp. now there's one place that i found that has a 30 amp toggle switch, but it was based on the amt of voltage usage......ok guy, any suggestions or ideals??

  • wb_luv_2000 May 14, 2010

    by the way, the switch i was found, is

    Contact Current Rating:
    30 Amps at 125 Volts ..

  • Kori Policy
    Kori Policy May 14, 2010

    A 20amp switch will work. You weren't planning on using a household switch were you? Just make sure it is for automotive use and you will be fine.

  • wb_luv_2000 May 14, 2010

    oh no, i'lll be using a toggle now, does this switch have to also be for automotive use as well??

  • Kori Policy
    Kori Policy May 14, 2010

    The switch should be rated for 12v - 24v.

  • wb_luv_2000 May 15, 2010

    again thanks.......back to the drawing board. lol lol



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I've got a mini one 2002 cooling fan dose not work unless I turn the a/c on if I don't turn the a/c on it will Overheat

7 Common Repair Problems Mini Cooper Owners Face
Feb 3, 2014 - This describes the top seven Mini Cooper repair problems owners may ... out the cooling fan and other related parts while the vehicle is apart. ... MiniCoopers aren't the most expensive cars to purchase new, and with .... Your article was a great read and at almost 60K miles , I've been through a few of them.

Mini Cooper cooling fan relay switch located Questions ... > ... > Cars & Trucks > Mini
Mini Cooper cars & trucks cooling fan relay switch located questions and answers. Ask your Mini cooling fan relay switch located related question. Get free help from topMini experts. ... I've also seen that problem in some Minis that required the fan motor to be replaced. ... The fan on my cooper s 2002 wont go on any idea.

Radiator Fan won't turn off! - North American Motoring
Sep 26, 2004 - Join Date: Aug 2002 ... I've posted a few times here on NAM that I never heard my car's electric fan run after the car was shut off. ... If it does not shut off then, replace that relay (you can find this relay at many ... Took the car in today to get thisproblem fixed. ... There is a recall on aux fan for MINI Cooper.

Dec 26, 2015 | Mini Cars & Trucks

1 Answer

Radiator fan not running while car is on

There could be a number of reasons why the fan is not coming on. First of all, it will not come on until the temp reaches a level necessary to have it on. In addition, if the a/c is on, it should be running at all times while the a/c is on. If your car has a/c, turn it on and check to see if radiator fan is running. If not check the following, coolant temp sensor, radiator fan relay fuse, radiator fan motor, coolant fan switch and temp sensor. Start with the easiest, the fuse and work from there. Most switches and sensors can be tested with a simple ohmeter.

Apr 06, 2014 | 1992 Toyota Corolla

2 Answers

It overheats when in traffic ior when it is idling

I have fixed my own 2002 Jeep Cherokee twice for the overheating issue. Overheating can be caused by a number of different problems, but one of the most notorious problems for the Jeep is the 'radiator fan relay switch'. When the temperature thermostat goes over 210, it tells the relay switch to turn on the radiator fan to cool down the engine. If that relay switch isn't working, the fan never turns on and thus your engine overheats. Here's a simple test to check if this is your overheating problem:
1. Start up your Jeep, open the hood, and let it run to the point where the temperature gauge on your dashboard creeps past 210.
2. Once it goes past 210, go over to the engine and see if the radiator fan kicked on. (the radiator fan is right behind the grill, circular with big plastic blades) If yes, then the relay switch is working. If no, then you probably need to replace the relay switch or the radiator fan motor is bad. But more than likely, it's the notorious relay switch.
3. Turn off the Jeep asap to avoid damaging the engine.

You can purchase a 'radiator fan relay switch' from most Jeep dealerships if they have a service dept. It should be around $75.
(I saved over $700 by not taking my Jeep to an auto shop to fix this) To change out the relay switch, you need to take off the passenger side front headlight. There's a black plastic guard behind the headlight and the relay switch is located under/behind that guard. If your Jeep ever experienced this problem before, you may see a cut-out where someone replaced this part before. If there's no cut-out, you can check out this link to see a picture of where to cut.

Once you switch out the part, you should be golden.

Mar 24, 2011 | 2003 Jeep Grand Cherokee

1 Answer

92 acclaim Radiator fan does not come there a fuse/..and what would be the location?..thanks

There is a fuse, but look at the relay first, and check for power there. If the relay is getting power on the secondary, then you know the fuse has to be good. Then try shunting the relay socket.
That should make the fan go on.
If it has power but goes not go on then, it is probably the fan motor. Check it for current with a test light.
If it does go on when you jump it, then it is probably the radiator temperature switch, which is supposed to control the relay, or the relay itself, or possibly the wire to the temp switch from the ignition.

Jun 02, 2010 | 1992 Plymouth Acclaim

2 Answers

198 mercury sable cooling fans motor

Cooling fans ( on radiator ) only come on when the engine reaches a certain (hot) temprature. There is a temp sensor threaded into the radiator end reservoir that switches a relay off and on that runs the fans. Either the temp sensor or the relay is probably bad. Normally , those fans will not be on if the car is moving , the air flow from just driving is sufficient to cool the rad. If you stopped and idled for a while , eventually the rad would heat up enough for the fans to come on.

Mar 31, 2010 | 1998 Mercury Sable

2 Answers

Radiator Fan Stays On

A simple test would involve disconnecting the fan switch while the fan is on. If the fan then stops the switch has failed. If the fan continues to run remove the relay , if the fan then stops the relay has failed.
Various inputs/outputs at the relay should be confirmed to be 100% certain something strange isn't going on.
Above all be careful of the fan itself , if it's running obviously but if it's not it could start during repair

Mar 01, 2010 | 2001 Buick LeSabre

1 Answer

My scerity sys went off and I my car over heats I think it needs a new thermastat

maybe your security system monitors engine temp ... it doesnt have to be the thermastat thats bad .. it could be the radiator fan switch or relay bad .. you can tell which by the following.
1. if it overheats only when idling or in heavy traffic but does not overheat while on the road (moving) then your problem is more likely the radiator fan switch, relay or fan motor ..
2. if your car overheats all the time even while driving then it could be the thermostat ..

check belts, coolent level and radiator clogging ..

Feb 19, 2010 | 2001 Pontiac Aztek

1 Answer

1996 Honda Odyssey engine cooling fan stays on.

I don't thing there is a short there is radiator fan switch that control these fan, it works off of heat. There is also a fan relay that control look in fuse box inside the hood for fan relay and make sure its NOT stuck , if it isn't then its the fan switch.This switch may be bad and cause the fan to turn on. Replace radiator fan switch located on water outlet on engine and this should solve your problem. A

May 15, 2009 | 1996 Honda Odyssey

1 Answer

Audi a4 2002 radiator fan keeps randomly starting

it could be a faulty fan switch, or faulty engine coolant temp sensor or a faulty fan relay

Feb 16, 2009 | 2004 Audi A4

2 Answers

1994 2.2L toyota camry radiator fans do not work


The Normal Temperature Range to the Fan Start is: A/C ON 181 F.
A/C OFF 199 F. When the Engine Reach this Temperature the Fan should start.

OK. Do this simple test.
1---- Start the engine, Desconnect the ECT Switch located on the Radiator,
See if the Fan come ON. If yes, if not go to step #2
Connect the ECT SWITCH and leave the car Running and with a Temperature gage.
See the temperature, if the Temperature go more than 199 F.
Turn the Engine OFF.
Disconnect the ECT sensor and check for Ground at the WHITE/BLACK wire.
If ground exist, Replace the ECT switch.
But if not. Check the wire for any damaged, and the ground at the Front Left Fender.
Repair as need.

2---- check the Fuse link RDI FAN . 30 amp.
Check the Fuse link CDS FAN 30 amp.
Replace if need.
And Return to step # 1.
Check the Radiator fan Relay, Rad fan relay 2 and 3. Replace if need.

Ok. I hope this help on your question.
I can give to you the WIRING DIAGRAM of the Fans, But I need a E-MAIL adress to do that.

Thank you for use fixya....

Sep 25, 2008 | 1994 Toyota Camry

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

47 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mazda Experts


Level 3 Expert

78936 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8836 Answers

Are you a Mazda Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides