Contour Fan Wiring- Dual Speed Knowledge

[adumb]

i am collecting all of my bits to do this contour fan install and i have the fan, picked out and ordered the flexalite controller 33054 and is a vsc unit. the one thing i am getting tripped up on is the dual speed on the fans. since i am getting a vsc do I even need to use the built in resistor thing on the shroud? or should i just hook up the the two wires coming out of each fan to my vsc and make them run on high, but they will be throttled down by the vsc anyways.

I do have the original ford wiring harness and all the plugs so i could use the built in two speed function if that does make sense i just can't see why it would. Having two things in place to do the same job doesn't really make sense.


fyi anybody who has a taurus or other fans they are different in the way the two speed setup works. other two speed fans have three wires coming out of the motor- ground, high speed, low speed. the contour fan only has two wires coming out of each fan but they also get wired through a little resistor thing that somehow magical makes it two speed.

thanks,
adam

 

[mikestang63]

Just hook up the fans to run on high speed. Google "taurus fan and FAL 33054" That;s how I did mine.
Taurus Fan & Flex-a-lite 33054 VSC: HOW TO DO IT! - Ford Mustang Forums : Corral.net Mustang Forum

There is also a good instal writeup in the tech archive here.

 

[larrym1961]

I have my dual Contour Fans wired to a Flex-A-Lite Variable Speed Controller and they work great.

 

[adumb]

well it turns out the factory harness on my contour fan had something wrong with it or the resistor thing doesn't work. when i have the whole harness plugged in and try to jump the fan with the battery i get nothing. but when i just use the pigtails straight from the motors they both spin up fine. i guess that pretty much makes the decision for me. high speed only but with the vsc unit it is.

 

[FoxMustangLvr]

i guess that pretty much makes the decision for me. high speed only but with the vsc unit it is.

That's the only (best) way to do it anyway. High speed! The VSC will kick the fan/fans on at 50-60% power so it's not such a high amp spike on your electrical system and slowly ramp them up to 100% power. The soft start is the best way IMO.

 

[Ziles]

I have my dual Contour Fans wired to a Flex-A-Lite Variable Speed Controller and they work great.

did you run a separate relay or fuse for each fan?

 

[FoxMustangLvr]

did you run a separate relay or fuse for each fan?

As far as I know the speed controller basically is a relay. Wire the power from fans to the controller and the power from the controller will go to the + side of battery with an inline fuse. There is more wiring than this obviously but I'm not going to go through all of it. If you purchase the controller it should come with instructions on what to do with all the wiring. The controller you get should be rated for dual fans.

 

[larrym1961]

did you run a separate relay or fuse for each fan?

The fan hot wires are wired directly to the VSC. The VSC has a 30 AMP fuse on it.

 

[adumb]

Well I thought I needed a Bosch 75 amp relay. I already have it and it should hopefully protect my vsc if something goes wrong. I am super close to being done. Somethings I still need clarity on though.

The flex alite instructions say to do positive and negative to battery but from most of the stuff I have read on the Internet people are going to the positive side of the solinoid and just making a ground connection by sanding off a little area and bolting the ground to the body. Which way would be best?

Also my 12v key on source will come from the low coolant wire. But both my relay and vsc need a 12v key on source. Should I splice two wires from the low coolant one and put one on both the relay and vsc or is there any other way to do it?

Posting a wiring diagram won't help because I have no idea how to read them.

I am so close to having this done.... Starting to get a little excited.

 

[mikestang63]

Well I thought I needed a Bosch 75 amp relay. I already have it and it should hopefully protect my vsc if something goes wrong. I am super close to being done. Somethings I still need clarity on though.

The flex alite instructions say to do positive and negative to battery but from most of the stuff I have read on the Internet people are going to the positive side of the solinoid and just making a ground connection by sanding off a little area and bolting the ground to the body. Which way would be best?

Also my 12v key on source will come from the low coolant wire. But both my relay and vsc need a 12v key on source. Should I splice two wires from the low coolant one and put one on both the relay and vsc or is there any other way to do it?

Posting a wiring diagram won't help because I have no idea how to read them.

I am so close to having this done.... Starting to get a little excited.

You want the controller + to either the battery or the hot side of the solenoid with a 30 amp inline watertight fuse and the - directly to the battery. The 12v key on can go to either the low coolant or the + for the cannister solenoid on the passenger side inner fender rail. The A/C goes to the + of the A/C clutch or the pressure switch. Then the fan + goes to the respective power wire for the high fan and the - to the fan ground.. Finally, the rasiator probe goes in the radiator abotu an inch under the inlet hose and then to the the controller. I would recommend soldering and then heat srhrinking all the connections. I mounted the controller to the passenger inner fender area under the CAI

 

[adumb]

I am a little confused. It sounds like I need to get rid of the relay I put in.

This is how I have it so far.

Both fans are hooked up to the pos and neg on the fan controller(purple and yellow) The pos (red)from the fan controller is going to my relay. The neg( black) just goes to a body ground. My relay has a body ground also and also has a power wire going to the hot side of the solenoid that has a 40amp fuse in it.

 

[adumb]

Did a little more research. I have flexalite fan controller 33054. On the summit site it says it does not have a relay so I definitely need one. Here are the install instructions.

http://static.summitracing.com/global/images/instructions/flx-33054.pdf

I think I am going to just splice the 12v from the coolant sensor to both the fan and the relay and try it out. Hopefully I don't burn my car down.

I did solder some connections but wasn't sure how to solder certain ends on that I needed so I crimped them. I heat shrinked everything so far. Soldering probably is better but I am pretty poor at it and would probably just be better off crimping everything.