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Here's the Atwood service manual. Hope it helps. Atwood Furnace Manual.pdf

Don't know if this will solve your problem but I had a problem on shore power where my chassis batteries were only being charged at @ 12.5v or less. After investigation I found that it was due to a bad temp sensor on my inverter ( I have a Trace RV2012) to the battery. I disconnected the temp sensor. I talked to Xantrex and they do not have a replacement for my unit and they said just leave it disconnected - not needed.

This is what I bought to replace mine. https://www.nwrvsupply.com/product/chrome-screen-door-latch-34990037/

I had a problem when I was on shore power where my chassis batteries were only being charged at @ 12.5v or less. After investigation I found that it was due to a bad temp sensor from my inverter ( I have a Trace RV2012) to the battery. I just disconnect the temp sensor. I talked to Xantrex and they do not have a replacement for my unit and they said just leave it disconnected - not needed.

I agree. The rubber deteriorates over time. I replaced mine with these - Haldex 48100367. https://www.napaonline.com/en/p/MBI48100367

I replaced mine with the following part from Autozone https://www.autozone.com/electrical-and-lighting/window-motor/p/dorman-oe-solutions-window-motor-742-277/54847_0_0 Check your motor orientation. Here is same motor with reversed orientation https://www.autozone.com/electrical-and-lighting/window-motor/p/dorman-oe-solutions-window-motor-742-276/54846_0_0 Here's a pdf that may help Kwikee Step Troubleshooting Guide.pdf

Suggest you contact Paul at AZPETE on the Irv2 forum. He works for HWH and can answer your questions. His email is pfmaddox@att.net and his phone number is 602-549-3638. He is a Commercial Member and has posted that his phone is always on, and if not answered, leave a message. He has helped others, including me, on this forum and I am sure he can help you.

I did something similar. This is what I used. I added a thermal switch and an on/off switch to the circuit as well. https://www.amazon.com/ARCTIC-F12-Pack-Standard-Computer/dp/B092ZV2MGL/ref=dp_prsubs_sccl_1/144-8863835-0869244?pd_rd_w=Ng4dJ&content-id=amzn1.sym.53e0c629-1936-47cb-93a2-c361b12e7d3c&pf_rd_p=53e0c629-1936-47cb-93a2-c361b12e7d3c&pf_rd_r=5Y7HBY2D44EWZZ7A6EZE&pd_rd_wg=d6zKA&pd_rd_r=666f6cff-6bea-45bc-9b17-550f6ffc5f2f&pd_rd_i=B092ZV2MGL&th=1 https://www.amazon.com/gp/product/B01LWCQAWN/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B0026RYU4W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 https://www.amazon.com/mankk-Switch-Rocker-Trailers-KCD2-7-201-B1-DZ/dp/B09FSGR7ZH/ref=sr_1_49_sspa?crid=3OX52GR4ZDBZE&dib=eyJ2IjoiMSJ9.xsQYIa2i0j47L3UYwLoxspc044LVxSwb3xzinPD-Tk1bH8IXzX8NYh6B4MHqShbWVHS3NIbduFqTprD_wspLGIxZhUU6DA-vv-iJlmsByO2PeFPFdqylguS6vYnPtqRyXpd-xG9-dC29NtNgje_vZfGoTHbQMn-WcJPqMnuLOUQMqluLWszbdxDM2_UZs9xU.juixTwmMjwy2zzmtIx4uJenbgv-XuutSAg1ohuP8Th8&dib_tag=se&keywords=12v+rocker+switch+on+off&qid=1709645231&sprefix=12v+rocker+switch%2Caps%2C120&sr=8-49-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9idGY&psc=1

X2 on above. This is what I purchased. https://www.amazon.com/gp/product/B00I8OH1VQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

There is no price listed on their website. You have to request a quote. https://coach-net.com/tire-and-wheel-protection/

I also have Coach-Net. I recently signed-up for their Road Hazard Protect program for 6 years. Total cost for 6 years was $502 or @ $85.00/year. Hazard Protect Coverage includes: Sign and drive, no deductible Up to 2 tire replacements per year (no limit on cost) Up to 2 wheel damage repairs per year (up to $300 max) discounted rate of $340 for 1 year or $502 for 6 years.

Suggest you contact Paul at AZPETE on the Irv2 forum. He works for HWH and can answer your questions. His email is pfmaddox@att.net and his phone number is 602-549-3638. He is a Commercial Member of that forum and has posted that his phone is always on, and if not answered, leave a message. He has helped others, including me, and I am sure he can help you.

Here's the air diagram for a 2006 Signature. I would guess that yours is the same. 2006 Signature Air Schematic.pdf

Here's are 2 good sources. Give them a call and see what they suggest based upon your present system/wiring. http://www.rvcams.com/ https://www.rearviewsafety.com/

Here is another good source for a replacement. https://www.qualitypowerauto.com/category_139/RV-Alternators.htm If you are getting it as a spare, get it WITH the pully, it will save you alot of trouble.