TheGrinch
Western MD
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Joined: 01/07/2008
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GoneRooing & Chuck_S - Thank you both for the tips and the pics. After having to suffer through my DW's hot & cold spells this past weekend while camping, I need to do this mod for my own sanity. The stock unit just doesn't cut it with it's wide tolerances before turning on or off.
Larry
'08 Roo 23SS
TheGrinch
DW
3 Sheltie Furkids; Mocha, Jessica & Sasha
Camped in the States below:
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Chuck_S
Broadview Hts, OH, USA
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The Hunter 42999B should be at several places including Home Depot, Lowes, and WalMart. The Hunter 44260 "should" also work. It's auto-setback and illuminated. Different wiring diagram though. Illumination is missing from the Hunters we all seem to have.
Do a web search for Hunger 42999B and there are dozens of websites touting it's use in campers and RVs. We're very happy. We carry spare batteries!
-- Chuck
'06 Roo 23SS behind '07 Expedition out of Cleveland
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4WallCamping
Northwest Illinois
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Joined: 06/16/2009
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TheGrinch wrote:GoneRooing & Chuck_S - Thank you both for the tips and the pics. Larry
You're welcome. However, I can't take any credit. The wiring I received, of course, from Les and it's obvious from the similarities with Chuck's picture as to where I got the visual idea for mine.
...You can even tell by my 'gloop' of epoxy 
Best of Luck...
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4WallCamping
Formerly: GoneRooing
DW and Son (10y/o) still at home...
2 DS, 2 DD, 2DD-in-laws, and 2 DGKids not at home...but will be camping with occasionally 
2003 F150 Heritage Edition 4x4 5.4 V8
2008 Rockwood Roo 21SS
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PU-Newbie
Dollard des Ormeaux
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I am looking at doing this mod next year as we just bought a used Shamrock 23 foot and we are now focused opn cleaning it up. What is the high low switch for ? What kind of switch do you use ? Are you controlling both A/C and heat ?
My dad always taught me, "If you don't ask questions, you will never know the answers...."
Thanx...
Rich....
2 Parents 
2 Kids
2 Mortgages now 
05 Saturn Relay 2 ("the beast")
05 Flagstaff 825D ("the mobile puppy") 
2002 Shamrock 23
" Flexible people don't get bent out of shape. "
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Chuck_S
Broadview Hts, OH, USA
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Do a search and the link to Les Adams published article on this (as well as the other couple of dozen threads and photos of it). "If you don't do the research you won't know the answers."
This modified thermostat replaces your existing thermostat. If that one contols both heat and AC this one will too. If that one has a High/Low AC fan speed switch this one will too.
-- Chuck
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Bears Den
Estero, Fl.
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I purchased a Hunter 42999, will it work for heat only applications? I have an HTT with roof air but a Dometic furnace. Thanks, no substitute for experience!!! I just did a google search and found my answer yes it will work.
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2004 Trail Lite Bantam B23
2008 Chevy Tahoe LTZ
2008 14' Hobie Mirage Kayak
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LAdams
Northern Illinois
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PU-Nubie wrote:I am looking at doing this mod next year as we just bought a used Shamrock 23 foot and we are now focused opn cleaning it up. What is the high low switch for ? What kind of switch do you use ? Are you controlling both A/C and heat ?
My dad always taught me, "If you don't ask questions, you will never know the answers...."
Thanx...
Rich....
The Hunter (or other stat) will control both heat and A/C assuming the A/C and heat are now controlled from a wall mounted thermostat...
The hi/low switch controls fan speed of A/C only (at least on mine and others done here)... Your only making and braking one (1) wire with the switch (hi fan wire to Hunter terminal "G") so any switch that has a single or even multiple contacts can be used as you'll only use one section of the switch - i,e, SPDT, DPDT, etc...
Your correct - the only "dumb" question is the one that is not asked - that's how we learn
Click on the link in my signature for the original article done in the year 2000... BTW - that same thermostat has now been in 3 trailers and is still going strong ...
Les
2000 Ford F-250SD, XLT, 4X4 Off Road, SuperCab
w/ 6.8L (415 C.I.) V-10/3:73LS/4R100
Banks Power Pack w/Trans Command & OttoMind
2006 Nomad 3150 Double Slide (Bunkhouse)
Hensley Arrow
Jordan Ultima 2020
HUNTER THERMOSTAT INSTALL
HOME MADE WHEEL CHOCKS
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sjones6335
Dracut, MA
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GoneRooing you inspired me to do this mod.
My thermostat only controls the heat but actually being able to control it will be great. I wanted the backlite display so I went with the Hunter 44155 for only $25 at wally world.
2005 Chevy Trailblazer LT
2010 Rockwood Roo 19
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4WallCamping
Northwest Illinois
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sjones6335 wrote:GoneRooing you inspired me to do this mod.
That's what having this forum is all about. Those helping and inspiring others. I am very new to RVing and have gotten so many ideas from all of you.
So thank you RV.Net, and thank you fellow members...
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LAdams
Northern Illinois
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Nicely done sjones !!
Les
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