In this post we provide intuitive, detailed electrical wiring diagrams for camper vans and RVs. Specifically, you can find the following diagrams on this page.
Click the links above to skip down to the section you need. Though these diagrams are created with campers, vans, & RVs in mind, these systems are also applicable to small DIY home systems.
To view these diagrams in an all-in-one, convenient eBook, download our wiring diagrams PDF. It’s completely free for you to use.
Free Electrical Wiring Diagrams PDF
The easiest way to access all of our electrical wiring diagrams is to download our PDF eBook. With 38+ pages, we include everything you need to build an electrical system for a camper van, RV, or even a tiny home.
And it’s completely free. Click the link below to download instantly. There’s no email signup required.
Download our FREE PDF to help build your van's electrical system; from batteries, to solar, to inverter, and more. 38+ pages of detailed diagrams, product recommendations, and links to additional resources.
Our eBook provides different electrical wiring schematics, material lists, and tool recommendations. We also link to valuable product recommendation videos to help you see what you get before you buy.
What's Inside The PDF?
Combined Wiring Diagram
Only in our eBook will you get the combined electrical wiring diagrams for the:
- 12V DC system
- Inverter system
- Solar system
- Alternator charging system
This is an integrated system that is appropriately sized for most camper vans, RVs, and tiny homes.
Full Material Lists
After every wiring diagram, we include detailed material lists to help you get the exact products you need to complete your electrical installation. These items include:
- Main products
- Recommended wire sizes
- Fuses & breakers
- Lugs & other wire terminals
- Tools
What are you waiting for? These diagrams are just a click away.
12V Electrical Wiring Diagram
The 12V system is the most popular for camper vans and RVs. Below is our 12V electrical wiring diagram, which includes auxiliary batteries, fuses, breakers, bus bars, and recommended wires.
We recommend using this diagram in conjunction with our below resources to help you accurately size your system.
Not sure which battery to use? Read our Li Time vs. Redodo lithium battery review to see our recommendation.
Material List
The list below covers only the main components of the above diagram. For a more detailed product list, download our free eBook.
Check out our 12V installation guide to learn how to put together your own system.
Inverter Wiring Diagram
In order to power laptops, blenders, and other common household appliances that run on 110V (or 220V), you will need to install an inverter, which converts the 12V DC power from the batteries to usable AC power.
Below is our inverter electrical wiring diagram, which includes parts of the 12V system, the inverter, power outlets, and power inlet (for inverter/charger models only).
Material List
The list below covers only the main components of the above diagram. For a more detailed list, download our free eBook.
Inverter Size Calculator
If you don’t yet know what size inverter you need. Fill out our simple, two-part form below to help you.
Solar Wiring Diagram
Installing a solar panel system is an important part of camper van and RV electrical systems. Below you can find our solar wiring diagram. You can copy this exact diagram, including wire and fuse sizes, if you intend to have a solar array that is 440W, or smaller, and with panels wired in series.
For more solar wiring diagram options, check out our solar wiring diagrams post. On that page, we provide solar diagrams for the following wattages:
- Small system: 0-220W
- Medium system: 220-440W
- Large system: 440-700W
Material List
The list below covers only the main components of the above diagram. For a more detailed list, download our free eBook.
Alternator (DC-DC) Charging Wiring Diagram
For camper vans & RVs, to charge the auxiliary batteries while driving you must connect the battery to the vehicle’s alternator (or car battery) via a DC-DC charger. Below is the alternator charging wiring diagram.
Material List
The list below covers only the main components of the above diagram. For a more detailed list, download our free eBook.
Recommended size for DC-DC chargers. These 100% pure copper stranded wires are what you'll need. Perfect for DC charging environment (continuous current).
Save money with this convenient lug terminal set. It covers 12 different lug sizes. Includes heat shrink. (Useful for other electrical sections)
Prevents 6 AWG wire from overheating & catching fire.
Custom Electrical Wiring Diagrams
If you are building a camper van (or RV) electrical system that does not fit within the parameters of the electrical wiring diagram we provided above, send us an email and we can try to design a custom electrical system that fits your requirements.
FAQ
Are Your Wiring Diagrams Really Free?
Yes! Just click this wiring diagram link to download our PDF from Google Drive. There’s no cost and you don’t need to provide an email address (we don’t want it anyway). While we do earn a small commission if you purchase the items off our eBook, with no additional cost to you, you are completely free to take our diagrams and shop elsewhere.
Are These Diagrams Only For Camper Vans & RVs?
No. Anybody can use these electrical wiring diagrams for whatever their purpose might be, such as when building electrical systems for boats, tiny homes, or even just for DIY hobbiests.
Additional Resources
If you found these electrical wiring diagrams useful, consider downloading our other PDFs for solar wiring and plumbing.
Happy building!
