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#1 |
Registered User
Join Date: Aug 2005
Location: Spring, Tx.
Posts: 31
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electric fans question
I want to put electric fans on my truck. My question is, how do you wire the fans using a thermo switch? Thanks for the help.
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#2 |
Registered User
Join Date: Apr 2006
Location: southern Il
Posts: 335
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Re: electric fans question
make sure that u use a relay!!!!
when you buy an adjustable thermo switch it will come with directions again- make sure you use a relay ![]() |
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#3 |
Registered User
Join Date: Apr 2003
Location: NB
Posts: 3,367
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Re: electric fans question
I'd just use a toggle switch. keep it simple and you always know if it is working or not.
And don't forget that relay.
__________________
1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD |
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#4 |
Registered User
Join Date: Jan 2002
Location: somerset,kentucky,usa
Posts: 154
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Re: electric fans question
A severe novice here, but I was wondering Why the relay was so important?
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#5 |
Registered User
Join Date: Nov 2003
Location: Alexandria, VA
Posts: 1,534
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Re: electric fans question
The fans draw alot of current and a relay is capable of handling this current, the thermal switch is not. Use the thermal switch to control the windings of the relay and the relay contacts to switch the fan/fans on and off. A toggle switch to override the thermal switch would be a good idea. Monitor your water temp closely with the elec fans. I've heard horror stories of guys burning up their expensive engines when/if the fans stop working due to a bad thermal switch, relay etc...
__________________
'72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction. ![]() ![]() ![]() |
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#6 |
Registered User
Join Date: Nov 2003
Location: Alexandria, VA
Posts: 1,534
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Re: electric fans question
I found this, hope it helps you understand how the circuit should be wired. http://www.aaroncake.net/rx-7/efaninstall.htm
__________________
'72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction. ![]() ![]() ![]() |
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#7 |
Hootis is as Hootis does...
Join Date: Nov 2002
Location: Southern Georgia
Posts: 500
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Re: electric fans question
I got the kit from Wes for my truck (383 stroker, headers, etc) it is well thought out, complete, and works awesome!
Strong endorsement - Wes's kit is da' bomb!
__________________
67 C10 LWB Fleet, 383, TH400, PS, 4BL-Holley, Headers & 3" Exhaust, 3" drop front, 4" rear springs, ECI shock relocate, Panhard Bar kit, wheels & tires 1995 Z28 Convertible - Borla, K&N, Lingenfelter Motor, C6 Wheels & Tires 1990 2500 4x4 Suburban 3" Catbac System, K&N, 2" Lift, Wheels, Tires |
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#8 |
Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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Re: electric fans question
2nd on the kit from wes. No relay either switch is controled with grounds, power wired right to battery
__________________
1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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#9 |
New Member
Join Date: Apr 2006
Location: west virginia
Posts: 29
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Re: electric fans question
I found if you wire the fan to a toggle switch instead of a relay,if you go to shut your motor down,it will keep runnin until the fan quits turnin.Strange,eh?
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#10 | |
Senior Member
![]() Join Date: Sep 2004
Location: N.W. Arkansas
Posts: 456
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Re: electric fans question
Quote:
It pretty much debunks the horsepower gains advertised by Black Max and others.
__________________
69 GMC 3/4 ton LWB 383 TH400 Dana 60 '84 300ZX '79 Nova (for sale) |
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