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This wiring diagram will show you everything you need to know about installing the core elements of a high-end camper solar electric setup. This system features a 3000 watt inverter, can handle MANY different configurations of solar panel arrays up to 1200 watts with almost no changes to the core wiring of this diagram, and allows for charging from the alternator as well as shore power. This is a long read and if you have questions, drop them in the comments below or if you feel you need additional guidance, you can set up a call with me: CLICK HERE for more info.
History of Changes to this Page (Click to Expand)
Changes Made July 17th, 2020: Changed main DC Distribution busbars to be the Victron Lynx Distributor system instead of the EXPLORIST.life busbar. The EXPLORIST.life busbar is still available to be a DIY solution but I simply could not keep up with the demand for making these. Building busbars was taking up so much time I was having to neglect producing more videos and blog posts, which is what EXPLORIST.life is really about. The Victron Lynx Distributor is an all in one DC distribution unit that houses the fuses, positive and negative busbars needed to take the power from your battery bank to your individual main components. This product is an EXTREMELY elegant solution I think you will be very happy with. I also added an inline fuse and fuse holder between the battery bank and Victron Lynx as well as an inline switch. If you have any questions, as always, leave them in the comments below.
Changes made to diagram July 8, 2020: Changed equipment case ground wires to daisy chain back to the negative busbar instead of each having their own individual runs all the way back to the negative busbar. This results in less wire used, less clutter, and more free space at the negative busbar. I also removed the 300 amp terminal block at the house battery in favor of a 400 amp ANL fuse attached to the busbar. The 300 amp terminal block is adequate but I have heard of isolated events of this fuse blowing prematurely. When a 3000w Inverter is running at full capacity, it could be pulling near 250 amps. At surge capacity and heavy DC loads from around the camper, it’s possible the 300 amp terminal fuse could blow under normal, safe operation. If you are reading this and already have a 300 amp terminal fuse attached to the house battery bank; you do not need to replace it UNLESS it starts blowing prematurely. Finally, the 50A terminal fuse attached to the house battery bank protecting the wire going to the battery to battery charger was replaced with a 60A terminal fuse as I could not find a 50A terminal fuse in stock. If you have a 50A terminal fuse in that location, that’s completely fine and you need to make no changes.
Changes made to the parts lists July 8, 2020: A complete audit of all of the parts on this page was performed. Supply chain issues took a toll on this page recently and left many of my links incorrect. I have found a way to keep up with my links in a much easier way I have been doing in the past which means the links on this page should be MUCH more accurate going forward. Also, I added MULTIPLE different solar wiring examples to the bottom of this page so you can choose which solar configuration suits your own needs rather than providing a crash course in solar array design as that was proving to be too complex and therefore leaving the ‘done for you’ nature of this blog post lacking.
This page was originally published February 27, 2020
Thanks for your patience with these changes. I’m constantly trying to find better ways to teach this stuff and these parts lists and diagrams will be continuously optimized over time. -Nate
DIY Camper Van Wiring Diagram
Pre-Packaged Wiring Kits
In the next section, I’ve put together a list with all of the wires, lugs, fuses, heat shrink, terminals and such consolidated and totaled up into a parts shopping list, but…
If you would like to buy all of the wires, fuses, lugs, and accessories from me, I have made that available for you and you can check out that wiring kit here: https://www.explorist.life/shop/wiring-kits/3000w-150v-600ah-camper-solar-wiring-kit/
Although this won’t save you much money, it’s priced the same as if you were to buy all of the parts from Amazon and I’m hoping that offering this wiring kit will simplify the process as sometimes Amazon runs out of stock or switches products on me out of nowhere. If you’d rather go through Amazon or shop around for the best pricing, that’s totally fine and I hope this list below helps.
A Note about Quantities
For the ‘Quantities’ in the below shopping list, each singular component is listed a quanty per each, wire is listed a quantity of feet, and heat shrink is listed as qty 1 = 2.25″.
Qty 1 – Inverter Charger means you need to purchase 1 Inverter Charger
Qty 3 – 4/0 Wire means you need 3 feet of 4/0 wire. This may mean you need to buy 5ft from the product page
Qty 5 heat shrink means you need 5 pieces of 2.25″ heat shrink. This means you’ll need 5 x 2.25″ pieces of heat shrink for a total of 11.25″ of heat shrink.
Camper Solar PARTS shopping list
Camper Solar PARTS detail
The section below will tell you where each of the parts from above fits into the wiring diagram. This is quite lengthy, but if you are having trouble seeing the diagram or just want more clarification that the diagram above doesn’t deliver, hopefully this will help:
Choosing your Solar Panels & Charge Controller
The following section provides you with several different options for solar charging. The above parts list can remain completely unchanged and the diagram above can remain mostly unchanged except for the alterations noted by the diagrams below, but whatever solar array setup you choose below for your needs, these parts will need to be added to your shopping list. These are broken up by total solar wattage. As a general rule, you want to have twice as many watts of solar as you do amp hours of batteries. So, 300Ah Batteries = 600W solar. 400Ah Batteries = 800W solar. 600Ah Batteries = 1200W of solar. This is just a rule of thumb. Not a law.