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08-25-2014, 08:30 AM
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#1
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Senior Member
Join Date: Apr 2014
Location: Bella Vista, Arkansas
Posts: 171
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cpu fans for fridge
I have a old computer with 3 fans inside it, they all say 12v on them. Two of them have 3 wires, black, red and blue. What wires should I use? I want to use one of these in the fridge and wire it to the light inside.
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2007 29 BHS
1999 F250, RIFFRAF NAPA AIR INTAKE, MBRP 4"EXHAUST, TS6 CHIP
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08-25-2014, 09:32 AM
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#2
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Senior Member
Join Date: Oct 2011
Location: Central California
Posts: 2,283
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Pretty sure the blue wire is a speed/rpm sensor used by the bios on some motherboards. It gives the computer the ability to throttle the fan. For what you are planning a suspect the red/black connections is all you need certainly should wire a switch into the circuit so that you can control on/off.
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08-25-2014, 09:46 AM
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#3
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Senior Member
Join Date: Aug 2011
Location: Missouri City, The Republic of Texas
Posts: 5,063
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With three wire computer fans the Red should be 12V, black neutral and the third wire is most likely transmitting the fan speed.
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T_
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08-25-2014, 10:19 AM
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#4
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Senior Member
Join Date: Apr 2014
Location: Bella Vista, Arkansas
Posts: 171
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Thanks, can u tell me what wires to use on the light inside the fridg.
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2007 29 BHS
1999 F250, RIFFRAF NAPA AIR INTAKE, MBRP 4"EXHAUST, TS6 CHIP
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08-25-2014, 10:51 AM
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#5
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Senior Member
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
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You don't want to use the wires to the light inside the fridge. The power is not there when the door is closed. Some people have run wires down the drain tube and picked up 12V at the outside rear of the fridge.
It is more practical to buy one of the fans specifically for this purpose. They use 2 "D" cell batteries and can run for almost a month.
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Chuck - Sparta, TN
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EDUCATION is what you get when you read the fine print.....
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08-25-2014, 10:57 AM
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#6
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Senior Member
Join Date: Apr 2014
Location: Bella Vista, Arkansas
Posts: 171
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Thx, for the reply. I have thought about the fans with batteries, I think I will try that. I have read that people wire into the Hotwire of the light so fan stays on.
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2007 29 BHS
1999 F250, RIFFRAF NAPA AIR INTAKE, MBRP 4"EXHAUST, TS6 CHIP
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08-25-2014, 01:54 PM
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#7
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Senior Member
Join Date: Nov 2012
Location: Lake Mary
Posts: 298
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Quote:
Originally Posted by Polk
Thx, for the reply. I have thought about the fans with batteries, I think I will try that. I have read that people wire into the Hotwire of the light so fan stays on.
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On the Norcold in our WhiteHawk, the fan shut off when I connected it to the fridge light contacts and closed the door, and I wasn't interested in dismantling an under warranty appliance to connect the fan to the door switch. Just ran a power lead down the condensate tube to the back of the fridge and picked up the 12v. power on a fuse back there. The fans I used were a made up affair someone sells on Ebay for $13. An alligator clip mounts the fans to the fins and provides the ground. Some folks don't care for this arrangement believing it is too noisy. I can't hear it all when it's running unless I open the door.
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08-25-2014, 01:56 PM
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#8
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Moderator Emeritus
Join Date: Apr 2011
Location: Michigan
Posts: 9,424
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I was able to to use one of the wires in my fridge light connector to run my fan (2005 Eagle).
My BIL's 2010 FW Eagle we had to run the wire down the condensation tube.
Bob
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08-25-2014, 02:19 PM
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#9
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Senior Member
Join Date: Jun 2011
Location: Kalamazoo, West Michigan
Posts: 1,817
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On my Norcold fridge the lamp has 12V on it at all times and the door switch takes it low in order to make it illuminate.
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08-25-2014, 02:46 PM
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#10
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Senior Member
Join Date: Aug 2011
Location: Missouri City, The Republic of Texas
Posts: 5,063
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Neither of our TT's have had a full time hot wire inside so I ran the wire down the condensate drain and tapped into 12V at the outside of the fridge. I've got the same fan that Thomas has. The bride and I think they're pretty handy. Our first one had gotten a little noisy and one of the fans died so I got another one. I'd rather go that route then mess with "D" cells as I have no other use for that battery size but plenty of folks buy them and swear by them.
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Cheers,
T_
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
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08-25-2014, 04:52 PM
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#11
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Site Team
Join Date: Nov 2010
Location: Virginia`s Eastern Shore
Posts: 17,093
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08-26-2014, 02:15 PM
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#12
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Senior Member
Join Date: Aug 2014
Location: Spicewood, Texas
Posts: 913
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Ive been RVing for around 45 years. I've never had a problem with ref. cooling.
Someone please tell me what the fan is for and where does it go.
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08-26-2014, 02:26 PM
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#13
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Lost in the Woods
Join Date: Jun 2014
Location: Woodstock
Posts: 1,128
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just to move air around. With the rig you have you likely do not need one. They are best for smaller fridges where they usually get crammed quite tight with food stuff
just sits on a shelf
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