Free van & RV electrical design tool
Plan your build with confidence.
Size your battery, solar, inverter, cables and fuses in minutes—then turn the plan into a complete van build.
One platform, the whole journey
Start wherever you are in van life.
Roam Wired connects the research, design and marketplace decisions that normally live across dozens of tabs.
Plan
Design your electrical system
Turn your appliances and travel style into a calculated electrical design, wiring diagram and parts list.
Create my electrical design
Learn
Build it properly
Follow practical guidance across electrics, plumbing, insulation, heating, furniture and layouts.
Explore Learn
Marketplace
Find your next move
Compare builders, camper van rentals and converted vans for sale.
Open the marketplaceNot a number. A complete design.
Most calculators give you a battery size and wish you luck. Roam Wired gives you the whole system: an interactive wiring diagram, a cable schedule, a fuse schedule, a parts list, and step-by-step installation notes — every value traceable to a real calculation.
Roam Wired Marketplace
Find the people, vans and trips that move your plan forward.
Use the free electrical design tool to turn what you learn into a wiring diagram, calculated cable and fuse sizes, and a connected parts list.
Learn the whole conversion
Good builds come from seeing how every system connects.
The electrical library is now the foundation of a wider conversion knowledge base—organised around real build stages and the decisions people actually make.
Latest from Learn
Go deeper into your build.
Choosing between 100Ah, 200Ah, and 300Ah of house battery for a van or RV — real watt-hour numbers, use cases, and US product picks.
12V vs 24V van electrical system comparison — wire sizing, component availability, efficiency, and which voltage makes sense for different build sizes.
AWG wire sizing for 12V van and RV electrical systems — the correct gauge for every circuit, the voltage drop formula, and a printable reference chart.
Stop second-guessing your build.
Five minutes from now you could have your complete electrical design — every wire, every fuse, every part.
Create my free electrical designFree · No sign-up to start · Takes about 5 minutes