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06-27-2022, 05:54 PM
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#1
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Member
Join Date: Dec 2016
Posts: 33
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Any Idea What This Is?
I have two of these on the roof of my 2018 Phaeton. There is a 1/4” gap under these that constantly traps debris. The second picture is with the cover off. As always, thanks for the help!
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06-27-2022, 05:58 PM
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#2
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Senior Member
Join Date: Jul 2020
Posts: 720
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Suspect a vent lid for holding tanks
__________________
2018 Phaeton 44OH
2023 Chevy Traverse Toad
Florida
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06-27-2022, 05:59 PM
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#3
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 30,452
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Looks like a previous owner removed his satellite system ; left the roof jack and fitted a dome to hide the mess. 
EDIT: can you describe the location on the roof ?
Central location ? Above drivers area? What diameter are they ?
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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06-27-2022, 07:15 PM
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#4
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Member
Join Date: Dec 2016
Posts: 33
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There are two of these with one just forward of the rear A/C unit and the other about 4 feet forward of that. I am the original owner so these came from the factory.
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Burr
2018 Tiffin Phaeton 40QBH
2015 Fleetwood Expedition (sold)
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06-27-2022, 07:17 PM
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#5
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Member
Join Date: Dec 2016
Posts: 33
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They are each about 10” in diameter.
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Burr
2018 Tiffin Phaeton 40QBH
2015 Fleetwood Expedition (sold)
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06-27-2022, 07:29 PM
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#6
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Senior Member
Holiday Rambler Owners Club
Join Date: Aug 2010
Posts: 9,521
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See any holding tank roof vents up there?
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Ben & Sharon
2008 43' Holiday Rambler Scepter PDQ
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06-27-2022, 07:36 PM
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#7
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Senior Member
Join Date: Nov 2008
Posts: 3,598
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If you dig down into those you will find wiring for satellite antennas that your coach does not have installed.
__________________
2013 Tiffin Phaeton 40QBH
2016 Chevrolet Equinox LTZ AWD V6
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06-27-2022, 07:45 PM
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#8
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Junior Member
Tiffin Owners Club
Join Date: Jun 2022
Posts: 13
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1 is prewire for Satellite the other is probably prewire for solar panel
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06-27-2022, 07:55 PM
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#9
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Senior Member
Tiffin Owners Club
Join Date: Oct 2010
Location: Spokane, WA
Posts: 297
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Quote:
Originally Posted by RangerIV
1 is prewire for Satellite the other is probably prewire for solar panel
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This is the correct answer. One is a pre wire for a Trav’ler satellite antenna and the other is a pre wire for solar. My solar install did not use this, however, as the installer wanted a different gauge wire and shorter run to the batteries.
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Ethan and Lisa
2017 Tiffin Phaeton
2019 GMC Acadia
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06-27-2022, 09:19 PM
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#10
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Senior Member
Join Date: Dec 2016
Location: So Cal
Posts: 1,335
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Do you have a ceiling fan in your bedroom? Thats the exterior cover on the roof
__________________
2000 42' BEAVER MARQUIS AMETHYST w/tag 2 SLIDES CAT C12 425 hp SOLD.........
2014 Tiffin Allegro Bus 37AP
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06-28-2022, 05:34 AM
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#11
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Member
Join Date: Dec 2016
Posts: 33
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Pre wire sounds logical
The holding tank vents are over near the side of the coach. These domes just seem a bit excessive. I am going to seal between the flanges and the roof to stop the debris from collecting under them.
I have found, when I hose the debris out from under the flanges, I seem to get water in the rear-most outside storage bays on both sides. Not sure if it is just a coincidence or that is where the other end of the pre wire conduit. Hopefully, sealing around the flanges will stop that. Thank you for all the input!
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Burr
2018 Tiffin Phaeton 40QBH
2015 Fleetwood Expedition (sold)
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06-28-2022, 12:55 PM
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#12
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Senior Member
Tiffin Owners Club Freightliner Owners Club
Join Date: Apr 2012
Location: Southern NM
Posts: 3,079
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As stated preciously, those are prewired access points. Surprised they leak as Tiffin usually loads them with sealant. It looks like in one picture that some of the sealant is missing . Use self leveling silicone and seal them. The rear one is for a dish satellite, and the front I think may be prewire solar or another satellite. Your original purchase order should have them listed, they used to be an option on most models except the bus but who knows..
__________________
2018 Allegro Bus 37AP
2014 Phaeton 40 QBH (sold)
2022 Jeep JLURD
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06-28-2022, 04:06 PM
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#13
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Senior Member
Newmar Owners Club Entegra Owners Club
Join Date: Dec 2015
Posts: 1,487
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Quote:
Originally Posted by 1doodadd
Do you have a ceiling fan in your bedroom? Thats the exterior cover on the roof
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“Ceiling fan”…giggle snort! 
__________________
2021 Entegra Aspire 44W
Previous: 2006 Newmar Essex 4508
2013 Tiffin Allegro Open Road
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06-28-2022, 04:09 PM
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#14
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Senior Member
Join Date: Dec 2016
Location: So Cal
Posts: 1,335
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Quote:
Originally Posted by Archer2
“Ceiling fan”…giggle snort! |
Yeah there is Always one in the Croud...........Its my turn 
__________________
2000 42' BEAVER MARQUIS AMETHYST w/tag 2 SLIDES CAT C12 425 hp SOLD.........
2014 Tiffin Allegro Bus 37AP
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