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Old 08-16-2018, 08:01 AM   #1
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MaxxFan Deluxe Installation

I ordered a MaxxFan Deluxe to install in the roof vent in the bedroom of our 28.5RSTS. Yesterday I pulled down the interior trim ring to look for possible power. What I found was a 110 junction box and a 4-wire cable. I'm thinking that the 4-wire is for some sort of thermostat connection for the A/C. Does anyone know if there is 12v power at this location? If not, any suggestions on how to get 12v power up there?

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-Chuck
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Old 08-16-2018, 08:03 AM   #2
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Is there a light in the vicinity that you could tap into?
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Old 08-16-2018, 08:05 AM   #3
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Is there a light in the vicinity that you could tap into?
The ceiling lights in the bedroom are on a switch. I don't think that would work out to well.
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Old 08-16-2018, 08:09 AM   #4
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The 4 wire probably terminates near a slide switch or light switch in the wall, you could attempt to use that for your 12v power.
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Old 08-16-2018, 08:33 AM   #5
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If the 4-wire is typical thermostat wiring, you won't be able to use it. Way too small of gauge size.


Earl
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Old 08-16-2018, 09:37 AM   #6
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I have the same camper and put in the same fan . I pulled 12 volts from the bathroom fan !
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Old 08-16-2018, 09:41 AM   #7
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Note; the trim ring the fan cam with was too short. If you slit the radius'ed corners of the oem trim ring to fit the square corners of the new fan it will work.
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Old 08-16-2018, 10:31 AM   #8
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Quote:
Originally Posted by Grumpy View Post
The 4 wire probably terminates near a slide switch or light switch in the wall, you could attempt to use that for your 12v power.
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Originally Posted by Mopar_Earl View Post
If the 4-wire is typical thermostat wiring, you won't be able to use it. Way too small of gauge size.
That's exactly what I thought when I read this suggestion. I may just call and see how much the RV shop wants to install it.
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Old 08-16-2018, 12:41 PM   #9
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The ceiling lights in the bedroom are on a switch
That's a nice upgrade. My 2015 doesn't have wall switches (switches are on the light fixtures).
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Old 08-16-2018, 12:42 PM   #10
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If the 4-wire is typical thermostat wiring, you won't be able to use it. Way too small of gauge size.


Earl
Fan draws 5 amps 18 gauge is good for 6 amps. Tie 2 wires together for +and- if necessary.
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