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post #1 of 6 Old 02-28-2011, 02:40 PM Thread Starter
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electric fan power

hi guys im installing a electric fan in my 90 gt i ran the constant hot to the hot side of the starter relay i was wondering where the best place to get key on power was from

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post #2 of 6 Old 02-28-2011, 09:08 PM
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anywhere on the fuse panel that is key on power(ecu fuse) trigger wire for relay does'nt draw much power.key foward key-on only. if your controlling the fan via a temp probe, you can trigger it from a constant hot fuse to run the fan till the motor is cool.. or you can trigger it from a key-on fuse(radio,wiper,ecu,fuel pump).. make sure you have a hi output alt. the 80 amp oem is not enough at idle.


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post #3 of 6 Old 03-01-2011, 03:53 AM
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i ran the hot to the positive terminal on the bat. the the cold threw a high amp in line fuse. ran the wire from their to the interior of car threw a fliped high amp switch next to the shifter.

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post #4 of 6 Old 03-02-2011, 02:55 PM
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Originally Posted by stangbanger88 View Post
i ran the hot to the positive terminal on the bat. the the cold threw a high amp in line fuse. ran the wire from their to the interior of car threw a fliped high amp switch next to the shifter.
Did you use a relay?

With a relay the whole idea is using a small source to control a larger voltage so there would be no need for a High amperage switch.

If you didnt use a relay I would suggest it, I had one friend burn up a high amperage switch when he tried it w/o a relay. He also noticed the fans spun faster when he switched to using a relay.

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post #5 of 6 Old 04-09-2011, 04:46 PM
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Thermostatically Controlled Electric Fan Upgrade - Muscle Mustangs & Fast Fords Magazine

I read the article and followed it to a T. My fan is working great. I also upgraded to an aluminum radiator and PA Performance alternator
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post #6 of 6 Old 04-09-2011, 05:09 PM
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use a relay for sure. get a 50-70 amp relay off of Ebay 8ga wire from battery to relay thru a same size fuse(stereo amp fuse will do)8ga to fan from relay. 16 ga wire to trigger wire on relay. use either a switch or (better)thermo switch of your choice. the larger wire runs cooler and spins them faster.

90 coupe, 302,9.7 comp,scat rods, ported windsor sr.'s(286 [email protected]" 2.05/1.60),tfs stage 3 cam,
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