Neither of my two vents have fans - the bath has a wire already behind the vent garnish which should be no trouble to tap into, while the other in the overhead I could string across the ceiling with a wiremold channel and wire into a light. There might be a wire behind the framing but haven't tried to see if I can detect one. I think I could make it look fairly nice although still having to wrap my head around the switching.
Just wondered if anyone had did this and had any thoughts or recommendations?
Now that's an interesting idea - hadn't thought about making a new one...
Each vent fan is of course framed around it's perimeter which makes getting a wire to it an issue to the lay person. As an RV tech I used a 5 foot long flexible drill bit to push through a pre drilled hole and slid it across the RV ceiling till it hit the wood framing of the vent I was wanting to pull a wire to. then drilled a hole through it the flex bit has a hole on both ends to connect a power wire to and pull it back to the vent. these bits can be bought at Lowes or Home Depot then saved for future wire pulls. The cost about $15 but saves you from doing a half assed looking surface mount wire that cuts down the resale value of your RV. Fishing walls is a little different I used ball type pull chain like you see on pull chains in ceiling fans it finds it's own way down a wall with loose insulation in it. Good luck.
First, that's cool. Very good information to know. I'll look for those.
Second, um, hate to admit it out loud but my fan mod is going to be considered half assed anyway :-) Course I'm not planning on selling my rig anytime soon–and she's not a canned ham where I might be concerned about rehabbing her. She's just for me to be comfortable. I will say, I'm kind of surprised I decided to go this way because it is a tad clumsy and I tend to be a perfectionist especially where you see things, but I felt it was necessary to get some air circulation in place and there are a lot of other things I need to spend that money on. I figure it will get me down the road a year or two, I learned more skills, and then in a couple of years I'll replace them with with fantastic or similar fan units.
Got the bathroom fan in today so will write up a blog post in a bit so you can see the results (no snickering - I'm proud of my creativity!!)
Just a thought; before you try to pull, not only air and noise but water into the trailer through a roof vent, you may wish to think about this option.
Place a fan in a side window pushing air OUT of the trailer. This will create a very slight vacuum inside the trailer and you can then selectively choose which areas of the trailer to cool off, simply by opening a normal ceiling vent or bedroom window, or whatever zone needs cooling.
Plus the fan noise is to a large degree muffled either by locating the fan in another room or by the exiting air taking the noise along with it.
It works well in our situation and we found the gentler air coming in doesn't attract or suck as many mosquitoes in either.
If you are trying to vent air OUT of the bathroom then reverse the window fan to pressurize the trailer, it serves also to evacuate cooking odors.
Just our experience.
B.T.W. Those 12 volt 'O2 Cool' fans are a life saver
David ,1982 VW Westfalia
This is good information! I haven't done the cabin overhead one yet so am going to take this to heart and play around and see how it might work in our setup- but don't regret doing the one in the bathroom (just posted a blog with pics but it is pending approval). In close quarters a little fan noise can go a long way to preserving dignity ;-P
You know that bit about sucking in mosquitos fits right along with my thoughts earlier today on how badly those screens are made to fit those vents....