Dual Spal fan wiring.
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Honda-Tech Member
Joined: Jul 2004
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From: Arlington, tx, usa
Dual Spal fan wiring.
I am trying to find some help on wiring up my two Spal 11 inch puller fans. I have a 90 civic i am swapping a b20 into. I will be running one fan for the radiator and one fan for the A/C. I am wanting to get the Spal relay for each and wiring them to the battery and use the stock fan wiring for signal. My worry is the i will be pulling too many Amps when everything kicks on. Anyone have any advice for me?
Keyboard Humorist
Joined: May 2002
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From: Granada Hills, Ca, USA
Re: Dual Spal fan wiring.
What exactly are you worried about pulling too many amps through?
Your signal/trigger wire will only see the load of the relays and not the fans.
So there is no worry to be had over the signal wire.
Your signal/trigger wire will only see the load of the relays and not the fans.
So there is no worry to be had over the signal wire.
Thread Starter
Honda-Tech Member
Joined: Jul 2004
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From: Arlington, tx, usa
Re: Dual Spal fan wiring.
Im worried about just pulling to many amps in general. I know my signal will be fine i am just worried about pulling so much fron the battery.
Keyboard Humorist
Joined: May 2002
Posts: 9,814
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From: Granada Hills, Ca, USA
Re: Dual Spal fan wiring.
Q. How much power do the Spal fans need? Do I need a new alternator or battery?
A. The different fans draw different amounts of current. Typically, the higher the airflow, the higher the current draw will be. Look at the spec sheets. Most of the Spal fans can run off of the existing vehicle electrical system without any problems. The higher output fans that draw 25 amps and up may need a higher output alternator to keep the battery from going dead. This is especially true on older vehicles that came with smaller output alternators. You won't need a new battery to run a Spal fan.
A. The different fans draw different amounts of current. Typically, the higher the airflow, the higher the current draw will be. Look at the spec sheets. Most of the Spal fans can run off of the existing vehicle electrical system without any problems. The higher output fans that draw 25 amps and up may need a higher output alternator to keep the battery from going dead. This is especially true on older vehicles that came with smaller output alternators. You won't need a new battery to run a Spal fan.
EFB055
Joined: Dec 2005
Posts: 13,249
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From: Brisvegas, QLD, Australia
Re: Dual Spal fan wiring.
And just check your power is fused higher than the amp draw of the fans. The alternator is rated around 60 amps. Check the fans you selected, they're probably around 12A each, unless you have a massive sound system you'll be fine.
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