hawk_fan

Medford, OR

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I'm about to install a 12V fan to cool the refrigerator fins. I was wondering where to splice the fan wires into. There is a white plastic sheath marked 120V and one gray plastic sheath marked 12V. I cut a slit on the one marked 12V and inside are two brown wires (not labeled). Is this where I splice into? If not, any suggestions where?
Pics would really help!
Thanks!
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mtkbuckeye

Clinton, Utah

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you know I had the same question but went ahead and wired mine up to one of those radio shack mono plugs and just plug it in to the outside light when we need it and it works absolutely great. I will go take some pictures right now.
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chkster

Antioch,Ca

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`IIRC the choice of wires on the 12V line will only switch the direction of the fan....
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mtkbuckeye

Clinton, Utah

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Here are my pictures.





You will see my fan is mounted on the bottom and I just store the wire in the area there when we travel. Once set up and it is warm enough outside to run the fan all I do is plug it in and it goes. No switches or anything when it is plugged in it is on and it works great. I never use that plug anyway so I figure that was a good place for it and didn't have to splice into anything there. I like to leave things as they are myself as much as possible.
Hope this helps.
* This post was
edited 06/12/08 12:00am by an administrator/moderator *
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hawk_fan

Medford, OR

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mtkbuckeye, what size mono plug did you buy?
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mtkbuckeye

Clinton, Utah

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This is the one.
Radio Shack plug
1/4" Mono Plug 2-pack
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hawk_fan

Medford, OR

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Anyone else with advice?
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MattC

Missouri

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I bought and use a regular a/c plug in fan I got from Radio Shack. We only camp with electric hook ups so that works for us. It won't help you if you boondock any though. I just plug it in in the refrig compartment with a splitter on the plug.
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Campingfools

Illinois

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I used a wire tape to pull the 12V wires from the fan to the porch light and tied in there. There is room just under the back edge of the counter top to run the tape. On my fridge, I couldn't identify a 12V source. Anyway, fan works just fine, and the fridge stays cold enough to keep ice cream.
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sushidog

Abita Springs, LA

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In an evaporation type refrigerator, the difference in temperature between the evaporator coil and the condenser is what makes the refrigerant (basically ammonia) circulate.
This is why heat is applied to the evaporator side. Placing your cooling fan at the bottom is not nearly as efficient as placing it by the top coils.
Yes, it helps to keep the overall temp below 100 degrees in the back of the fridge, by keeping air circulating, but you would do better to have a fan exhausting warm air out the top vent.
That's how the OEM Dometic fan is configured. They should know, as they build the fridge. 
This is how my set-up looks:

I replaced the single, noisy stock fan with a much quieter, high-tech, fluid bearing dual fans that together move more air than the single, original (112cfm vs 88CFM for the original fan).
They draw it across the entire condenser coil too, rather than just part of it. As a side benefit, together they use a little less current than the single, Dometic fan.
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