I have a 1992 Itasca Toyota RV with a electric issue

limited info generic answer notify manufacturer --rv shop--but check level sensor in mean time

I am familiar with a NEST thermo. The color of the wires on the RV should conform to AC standards of which there are none.

Power to the device is a serious consideration. Contact the manufacturers support BEFORE purchasing. Discuss their product in your proposed application.
The residential standard power is 24 vac. If your RV provides this voltage, then installation is straightforward. The NEST may have a solution to this if it is a problem in your application.

With the problems involved, I would have to recommend the PROFESSIONAL installation option mentioned in the NEST directions. If you have the tools, skills and knowledge to resolve any issues then do it! I can vouch for the NEST thermostat's durability. It has been subjected to rough handling, changing homes and power outages.

I love my NEST and it is much smarter than needed but I can check and set it from any internet access. Nest Learning Thermostat 3rd Generation Stainless Steel Works with Amazon...

hello
u'd need a proper manual for this in m y opinion
like there are plenty of dealers and online shops that deal in those..
you can get some free at sites reliable-store.
and it;s actually really illustrative

Winnebago RV Sales ' Itasca RV Sales ' Winnebago ...

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Location: Main ... The All New Fuel Efficient Fuse with the Ford Transit Power Stroke Diesel! .... New 2016 Itasca Solei 36G The Forza and Solei Offer Diesel Pusher ... New 2016 Itasca Sunstar LX 27N All New Upgrades to the Vista and Sunstar with ... 2016 Brave Returns with Its New Crown as the 2015 RV of the Year Title!

Sunstar ' Specifications ' Winnebago RVs

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Winnebago IndustriesSunstar ... Length, 27'1", 31'3", 28'3", 31', 36'5", 35'5", 37'. Exterior Height1, 12'2", 12'2", 12'2", 12'2" ..... 2015 Winnebago Industries, Inc. All Rights Reserved.
Winnebago Industrieswinnebagoind.com/resources/manuals/Winnebago IndustriesIf you are not in a position to visit your dealer, some parts are available online at www.WinnebagoOutdoor.com. Please note that you can look up part information ...Winnebago RV Sales ' Itasca RV Sales ' Winnebago ...

maintaining rv a/c is just a matter of changing filters, cleaning coils and drain lines. visual inspection of wireing for heat damage.

r-22

Contact your local retailer/service center directly or online here

I need the same wiring system dawn-michelle 804-252-2738 [email protected] we have a short in system thanks

You my friend have a project ahead of you. I don't think Itasca could get you a wiring diagram for it. Most of them were built on "running assembly" lines and sourced parts from assorted suppliers. Depending on what's inoperative, you will probably building your own harness'. You might check with some of the larger RV shops for advice/tech info but I'm afraid you're in for an adventure.. (sorry, didn't have better answer)