Fox T-Bird/Cougar Forums

I want my electric fan hard wired on high. I have used a solenoid in the past with great results, but somehow ogt my wiring wrong. Anybody know the wiring for this. One ground from fan and the high speed wire from fan, then where to from there?

I am not looking for answers about fan controllers. I am looking for the answer to my simple question......well, not simple for this boy today.

Here is the diagram to the fan setup I've built and am getting ready to install on my car.  The diagram calls for 2 relays, 1 5-pin and 1 4-pin, but 2 5-pin would be just fine.  I'm fused for 60A and I'm running all 10GA wiring except for the relay signal wires.  The fan came from a 2010 Fusion and fits our radiators almost perfect.  I removed the variable speed controller and built out the relays to do a similar job.  I use a blower resistor to lower the current and by proxy, the fan speed.  The resistor will burn up if it's not secured to the fan in the airflow path, so mine is attached in the former speed controller location, I also happened to have a connector for it, so it's nice and neat. I'm considering reversing the current flow through it to avoid blowing the thermal limiter. 
The beauty is: the fan can be running low for AC, and then kick up to full for a high temp condition if need be, and the transition is seamless, it doesn't even matter if the low relay is on, because once the 2 speed relay kicks on, it doesn't have to care what the other relay is doing.

I have this one....

http://www.ebay.com/itm/161045040873?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

Looks like it's already a 2 speed fan.

I just saw this as well this morning.....

http://images.search.yahoo.com/images/view;_ylt=A2KJkPyt_MxRW3IAL2GJzbkF;_ylu=X3oDMTBlMTQ4cGxyBHNlYwNzcgRzbGsDaW1n?back=http%3A%2F%2Fimages.search.yahoo.com%2Fyhs%2Fsearch%3F_adv_prop%3Dimage%26va%3Dhard%2Bwiring%2Ban%2Belectric%2Bfan%26fr%3Dyhs-Babylon-002%26hsimp%3Dyhs-002%26hspart%3DBabylon%26tab%3Dorganic%26ri%3D1&w=591&h=422&imgurl=www.toyotaoffroad.com%2FArticles%2FProjects%2FElectric_Fan%2FImages%2Frelayconfig.jpg&rurl=http%3A%2F%2Fwww.toyotaoffroad.com%2FArticles%2FProjects%2FElectric_Fan%2FElectric_Fan_Install.htm&size=47.7KB&name=%3Cb%3EElectric+Fan+%3C%2Fb%3EInstall&p=hard+wiring+an+electric+fan&oid=96c48ed1dc6df8d43b011dc183c75786&fr2=&fr=yhs-Babylon-002&tt=%3Cb%3EElectric+Fan+%3C%2Fb%3EInstall&b=0&ni=21&no=1&ts=&tab=organic&sigr=12k8bbt5m&sigb=14putvarm&sigi=12bb8ecv6&.crumb=z1j75TLXDyG&fr=yhs-Babylon-002&hsimp=yhs-002&hspart=Babylon

I have a solenoid like that.

Those solenoids take a ton of power to hold, AND most aren't rated for constant use.  Get some of these (http://"http://www.newark.com/durakool/dg85c-7011-76-1012/automotive-relay-spdt-12vdc-80a/dp/59P3468"), and some of these (http://"http://www.sonicelectronix.com/item_5636_Bosch-RS1-Single-Relay-Socket.html?utm_source=google&utm_medium=paid_search&utm_campaign=paid_search_google_pla&scid=scplp3597133&gclid=CK6c1uzbhrgCFcWZ4AodRAcA8Q").

Would Autozone have those?

They should, but make sure you don't get cheap 40 Amp relays. They'd probably hold up, but I like my relays to be higher rated than the fuse for the circuit.

Just got your last post. I hooked up the fan as the diagram in my post showed. Just as it shows. I have a solenoid (heavy duty), and it still comes on when the power wire to the battery is hooked up. Can't figure it out. It should only come on when the key is turned. I am trying to get it to work. I can't get to the parts store till this evening. The Sport is down.

In the diagram I posted.....it shows a "switch" in the wire to the fused source. I'm wondering what switch they are wanting, or if it goes to the switched source when you turn the key on.

Is it on without the small wires (ground and trigger) connected?  Or is it on when you're connected to your switched power source?  Just one more question, why are you connecting it to come on with the ignition?  You don't really want it running all the time do you?

Yes, I want it running all the time. Like I always have had it.When all wires are connected, and I hook the terminal to the battery, it comes on. It should be off til the key turns it on.

What's the trigger wired to?

FINALLY!!! I figured it out. The solenoid is brand new.............and a bad one. I installed another solenoid, and now we have a fan again. One day I'll install a new fan kit, but for now, I'm happy.

I appreciate all of your time helping me with this.

Am I the only one that is confused with what Vinnie has been trying to do? For an always-on, a 75A Bosch relay works fine. Connect to battery, ignition wire on the driver side of the engine bay, ground, and run to fan. I don't understand the need for the solenoid? The left side of TheFoeYouKnow's diagram is how it's typically done.

Years ago, my fan was done according to the diagram I found and shared the link to. It worked great for a very long time. The fan was 16 years old, and died, so, I got a brand new one. I didn't wire it originally, he did. I got started installing the new fan and thought that somewhere along the way, I messed up. Only to find out that the brand new solenoid was no good. Now, it's wired per the diagram I showed, and working great.

Since you've got a 2 speed fan, you should wire the solenoid to the low speed side, and wire a temp switch to fire the high speed side.  It would cut the noise, and reduce overcooling, then when you need it, you've got that extra cooling in reserve.

Hmmmmmm....I may just try that some time. I'll have to have a diagram made for a child. I HATE electrical stuff. hate it.'

nice suggestion on the relays Foe,
vinnie, i get it,,
you need to understand your setup so you can troubleshoot later.  I get what your doing and getting a constant on fan has some disadvantages especially in local city traffic,, not really on highway.

either way glad to hear your up.

Thanks a lot. As simple as a fan relay kit probably is, that stuff just racks my brain. Not a secret. LOL.

Jay i think i sent you some BOSCHE 75 AMP HD relays. Those things are great for FANS. Also the HD power relays posted come in 100% duty cycle capability. We use them in ambulances and fire engines. They come in 100 150 and 200 AMP continuous duty as well. They come 3 wire or 4 wire depending on the application you need.

:hick::mullet:

yes,
the durakool relays are top shelf as well,,