Question on hooking up a set of dual fans!

[pgermond]

For the most part it's personal choice and convience. If the existing wire is 12 or 14 gauge, you shoulldn't have any problem tapping into it, which is what I did. Also you should up the amperage for the fuse. The pusher fans don't do half the job a good puller will do, however, I do like the look of the pushers and have them installed on my car.

[ByronRACE]

I had a 16" unshrouded puller on a large radiator (33x15x4, 10 core) and the puller couldn't do the job. Rated at 2200cfm. I didn't have room for more puller fan due to the thickness of the radiator, the supercharger on the front of my engine, and the swaybar in the vicinity.

I changed to twin 14" spal pushers rated at 1730cfm each. I ran two 10ga wires to the fans and they run on independant relays. Each fan draws around 15A steady-state but spikes at power-on to 25+A, so make sure the relay contacts can handle that. Yes, you can run smaller wire...but if you want full output from the fans, don't run smaller wire. Why? The smaller the wire, the larger the series resistance of the wire and the less resulting voltage at the fans. You could run 14ga wire and it wouldn't melt...but it also wouldn't give you more than about 11V on the fan with a 14V (engine running) electrical system. You'd lose 10-20% of the fans effectiveness right off the top due to not running it at full voltage.

The twin 14" spals keep the water at 180 (thermostat temp) regardless. So, depending on your radiator geometry, twin pushers could be a whole lot better than a single puller; it certainly was for me.


B

[Power Surge]

My car has the dual pushers in front and the single aftermarket 16" on the inside. They are all wired together as far as I can tell, done by the building Shelby dealer. I have noticed that the past few times I've had the car out, it gets a smell of burning electrics, and tonight I realized it just does it with the fans on.

Time to rewire that setup.