Thread Tools Search this Thread Display Modes
Old 07-01-2019, 08:46 AM   #1
Zcashio's Avatar
1968 28' Ambassador
1964 26' Overlander
1976 Argosy 26
Heber Springs , Arkansas
Join Date: Apr 2016
Posts: 101
DOMETIC 3-way fridge help- RM8501

So, this is my first time having a 3 way fridge. I’ve got propane lines working and it works on 120V while hooked up to shore power. Only issue i am having is determining how to make it work on 12V while hooked to the tow vehicle. I have all my 7 pin wires wired correctly, as I found a diagram of the late 70s wiring color codes and I now have “trailer brake connected” symbol on vehicle dash, reverse lights are working, and so the charge line is now wired correctly. What am I missing here? I read where the D+ on the back needs to be wired but a Dometic rep through email told me that is only for a motorhome installation.. is that correct?

Any help would be appreciated as to how I can get this working. I’m not opposed to running fridge on propane while driving, but I want to be able to run on 12V when I want.

Zcashio is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dometic RM8501 tracenuttall Refrigerators 12 10-06-2014 08:42 AM
Making a 2-way Fridge into a 3-way Fridge? Bunkroom Refrigerators 18 06-03-2014 04:37 PM
Dometic 2 Way Fridge snakecharmer Airstream Classifieds 0 01-08-2014 02:11 PM
2-way vs. 3-way Dometic loriday Refrigerators 12 08-15-2010 09:21 PM
What is 2 way vs 3 way fridge? Astrodokk Refrigerators 12 06-01-2005 03:33 PM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:00 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.