Im going to kindly disagree with Stepman

Setepman is right when he says that HP gained from the fan is lost at the alternator....But what he fails to realize (like many others) is that the fan does not operate all the time. If you only drive around town then your net gain over the course of say a month wont be noticeable. BUT! if you drive at speeds above 45 MPH for even a fair portion of your daily trips then the advantages will be bigger. The advantage of the electric fan continues to improve as sustained RPM increases....For example when I drive to my other house 80 minuets away at an average speed of 75mph and 3000 RPM that electric fan never comes on once not even for a second. Imagine how pointless it is to turn that 4 bladed fan with about 45 degrees of pitch at 3,000 rpm for 80 minutes...you can gussy it up however you like but it boils down to a huge waste no 2 ways about it.

If than doesn't prove my point look at all the cool German, American, Japaneses cars... whatever your second favorite car is that was made in the last 25 years...how many of them worth a crap have a direct drive fan...ill bet not a damn one of em.

I think you should stick with the electric fan and the trouble of installing it because it will pay off in the long run...Unless you never plan to drive it much...The fan only comes on in traffic when your at a stop or dead slow pace the engine sure in the hell isnt doing much for the wheels im sure it can spare a few HP to run that alternator for the electric fan until you get above 30 mph.

-Gun

 

Sounds like Glen has risen
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Oh good it wasnt just me thinking it

 

You didn't think I would just let that go would you? ...Ok, when you are cruising down the freeway @ 70 mph, turning 3k.....When are you going to use the extra 3-5 hp gained when you are already overheating. You need to solve the core issue first. The only time I would use your philosophy is when I am trying to gain 10th's of a second in a 1/4 mile!


Didn't want to start something but..

 

overheating or not, the force it's taking to spin that fan is causing drag which is helping to burn more gas... but hey whatev.

 

an electric fan is a huge upgrade to power and fuel economy. the lincoln mark 8 fan flows a lot more than the taurus but you gotta work with what you can find

 

I looked at the Mark 8 fans while at the junk yard but they were bigger and I thought it may be harder to make it fit.
I agree with Stepman on the issue of finding the core problem 1st which is what I plan on doing.
But I do think that upgrading to an electric fan is a good upgrade and worth the trouble.
So as far as the question on hand..... Yellow wire to starter solenoid, green to a switch?

 

They yellow wire takes a switched source to turn the controller on and off.The green wire is a "bypass" in case you want the fan to come on earlier or stay on.I would put the yellow to the back of the iginition switch.

 

Calm down stepman, he said "Not really looking to gain HP, if I gain some its just a bonus. Doing a radiator flush,changing out hoses, thermos,gasket, etc and trying to determine if the radiator is clogged or what not. That's my first priority."

I agree, you need to find out why it's doing all that. If you throw on the new electric fan before you do, so what. Still, just find your cause of trouble, and fix it.

 

I totally agree that the current overheating issue is not a fan problem and that is should be fixed first and after having done that the electric fan should be installed.

I have spent a long time playing with propeller, electric and gas engines. I know that a 4.5" X 4.5 pitch propeller for a certian model airplane engine draws 30 amps at full power...To prove how thick air and how much drag is causes by swapping that prop for a 5" X 5 pitch amps went to 55. I know on the small gas engine that a 1 inch prop size difference is enought to take a bad *** 2.2Hp engine @ 14,000 rpm and bog it down to 10,000 rpm reducing thrust by about 30%.....Air is thick and having that fan spin all the time is just a waste...

-Gun