I have a 2015 Keystone Premier. I'm getting ready to purchase and install a Fantastic Fan. I checked the RV today to see if it was already pre-wired in the vent port. While it wasn't pre-wired, I did find some wires that were reachable from the port. One went to the LED light and was red and white. The other one I couldn't see what is was connected to, but it was black and white and seemed like the wire may have been a touch thicker than the red and white wire.Based on my extremely limited electrical knowledge, I'm assuming the red and white wire is for 12v and the black and white wire is prob the 120v for the AC unit which is right near there.Can anyone confirm or deny that this is accurate? I checked the manual and there was no real info. I know you can tie the fan into the wiring with the lights, so I'm pretty sure the red and white cable will work for my purposes, but wanted to get some confirmation if possible before I start splicing wires.

Also, a thought I just had was regarding the light switch. If I just tapped into a wire in the ceiling, won't my fan be at the mercy of the light switch being on or off? There isn't a switch anywhere near the vent port. I'm guessing the next best option would be to go into the fuse box, which is about 5 ft away from the vent on the ceiling and about 7ft down under a pantry.

It all depends...To find out if the red/white is 12v, pull a 12v light fixture to see if the pair has the same colors.If so, TURN OFF ALL POWER, then snag the intended wire pair, then strip them enough to access the copper. Turn on power - check with your voltmeter at a range for 120V AC just to ensure it is not carrying 120V. If not, then put your meter on 12V DC & check. If you have current, you are good. Next, toggle your switch - does the power go off on that line? No? You have a good wire. Yes? then it is switched.Have fun!

I did confirm that the red and white wires go to a 12v LED puck light in the ceiling. I'll have to grab a meter to do the proper testing. This should do the trick, right? MultiMeter on AmazonI'm almost positive that the wire would be switch based since the light is switch based and there is no other way to operate it. Assuming it is switch based, is my only other option to go straight to the fuse box?Here is a pic to give you an idea of how it's laid out: Screenshot of Area

RavensFan24 wrote:I did confirm that the red and white wires go to a 12v LED puck light in the ceiling. I'll have to grab a meter to do the proper testing. This should do the trick, right? MultiMeter on AmazonI'm almost positive that the wire would be switch based since the light is switch based and there is no other way to operate it. Assuming it is switch based, is my only other option to go straight to the fuse box?Here is a pic to give you an idea of how it's laid out: Screenshot of AreaThat multimeter will work just fine for you.

I believe any AC wire should also include a ground wire and the 3 wires should be covered like your house wiring at home. So maybe your black and white wires feed another 12 volt item. Also - Is it possible to feed another single wire back to the light switch? There will be a constant 12 volt wire there.

12v Wiring Confirmation | Good Sam Community

RavensFan24
Explorer
Jun 16, 2015
Any tips for hooking straight into the fuse box? I'm betting that's going to be my best option if the 12v line is switch based.

It seems I'll need to fish the wire through the ceiling into the pantry and then drill a hole in the top and bottom of pantry to get to fuse box to tap in.

On the Keystone forum one of the users suggested that the black and white wire I found may also be 12v, which I'm hoping is the case, so I can access a line thats not switch based.
neschultz
Explorer
Jun 16, 2015
I believe any AC wire should also include a ground wire and the 3 wires should be covered like your house wiring at home. So maybe your black and white wires feed another 12 volt item. Also - Is it possible to feed another single wire back to the light switch? There will be a constant 12 volt wire there.
Ron3rd
Explorer III
Jun 16, 2015
RavensFan24 wrote:
I did confirm that the red and white wires go to a 12v LED puck light in the ceiling. I'll have to grab a meter to do the proper testing. This should do the trick, right? MultiMeter on Amazon

I'm almost positive that the wire would be switch based since the light is switch based and there is no other way to operate it. Assuming it is switch based, is my only other option to go straight to the fuse box?

Here is a pic to give you an idea of how it's laid out: Screenshot of Area

That multimeter will work just fine for you.
RavensFan24
Explorer
Jun 16, 2015
I did confirm that the red and white wires go to a 12v LED puck light in the ceiling. I'll have to grab a meter to do the proper testing. This should do the trick, right? MultiMeter on Amazon

I'm almost positive that the wire would be switch based since the light is switch based and there is no other way to operate it. Assuming it is switch based, is my only other option to go straight to the fuse box?

Here is a pic to give you an idea of how it's laid out: Screenshot of Area
BruceMc
Explorer III
Jun 16, 2015
It all depends...
To find out if the red/white is 12v, pull a 12v light fixture to see if the pair has the same colors.

If so, TURN OFF ALL POWER, then snag the intended wire pair, then strip them enough to access the copper.
Turn on power - check with your voltmeter at a range for 120V AC just to ensure it is not carrying 120V. If not, then put your meter on 12V DC & check. If you have current, you are good.

Next, toggle your switch - does the power go off on that line? No? You have a good wire. Yes? then it is switched.

Have fun!
RavensFan24
Explorer
Jun 16, 2015
Also, a thought I just had was regarding the light switch. If I just tapped into a wire in the ceiling, won't my fan be at the mercy of the light switch being on or off? There isn't a switch anywhere near the vent port. I'm guessing the next best option would be to go into the fuse box, which is about 5 ft away from the vent on the ceiling and about 7ft down under a pantry.

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