Vanagon – aux battery, solar, and aux wiring diagram update

Whoops! Uploaded the wrong diagram, hold on….fixed

I redrew my schematic to show changes made in the last year. I dropped the Doc Watson meter, added solar panel controller, and added large fuse at the big aux battery. And I added a 15A fuse on the small wire that runs from the ACR to neg return. It’s a safety in case of an internal fault in the ACR. Also, I corrected mistake in last diagram where the ACR was connected incorrectly to the aux fuse panel. Now you see it is fused at panel. I should make it clear that I do not have a power feed to the fridge cooling system. I may add that later, but I don’t miss it.



  1. #1 by Eric Lundeen on July 29, 2015 - 8:33 am

    Hello, I really like your blog. I have an 82 westy and love seeing the improvements that you create. I am in the process of putting in a house battery and a solar panel,etc. your schematic is pretty straight forward. What did you use to create the schematic? Thx, regards, Eric in Mcminnville Perla, 82′ Westy

    Sent from my iPhone


    • #2 by albell on July 29, 2015 - 9:15 am


      Thanks for the compliments, I am glad the posts help. I used omnigraffle to do the wiring sketches ( I can’t in all honesty call them true wiring diagrams). The program is primarily meant for organizational charts, flow charts etc, but it does work for wiring. There are libraries of shapes available and electronic components in some of them. I needed up making my own component shapes, not always sticking to proper symbology but heck it gets the idea across.
      Connecting objects with the lines is easy with the program. Alignment etc the same.


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