Campervan wiring diagrams that edit themselves
Start from a proven system design — every template is fully wired with correctly sized cables and fuses, and re-sizes automatically when you customise it in the free editor.
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Budget AGM Starter
The lowest-cost way into van electrics: an AGM battery, a modest solar panel and alternator charging running a small fridge, lights and USB sockets. Everything is sized conservatively so the budget bank lasts.
Weekend Camper
The classic starter system for weekend trips: a compressor fridge, LED lighting, water pump and device charging, all running on 12V DC. Solar plus alternator charging keeps the battery topped up with no inverter to worry about.
Campsite Tourer (Shore Power)
Built for touring between campsites: shore power hook-up with proper residual-current protection, backed by solar for days off-grid. An inverter runs the kettle and TV when you are away from a pitch.
City Stealth (No Solar)
A stealth city build with no visible solar panels: the battery charges entirely from the alternator while you drive. Fridge, lights, water and device charging for urban vanlife without giving the game away on the roof.
Weekender + Inverter
A weekend setup with creature comforts: everything from the basic weekender plus a roof vent fan, diesel heater and an inverter for laptop charging. Still compact, but ready for long weekends in any season.
Solo Off-Grid Boondocker
For solo travellers who park up off-grid for days: Starlink internet, laptop charging, a diesel heater and a proper fridge, powered by a solar array sized for real overcast-day autonomy.
Couple Full-Timer
A complete live-aboard system for two: large fridge, full lighting, heating, hot water control, Starlink, two laptops and shore power for winter pitches. Every circuit is sized for daily, year-round use.
Heavy Off-Grid (Induction Cooking)
The no-gas flagship build: induction cooking, coffee machine, kettle and Starlink on a big lithium bank with a large solar array. The most demanding system a 12V van can sensibly run — every cable and fuse matters here.
Not just pictures — living designs
Most campervan wiring diagrams online are static images: if your fridge is bigger or your solar array smaller, the cable sizes and fuse ratings on the diagram are wrong for your build. Every template here is generated by the Roam Wired design engine — open one in the editor, change anything, and the whole system re-sizes: battery bank, solar array, cable cross-sections, fuse ratings and the parts list.
Prefer to start from your own appliance list? Choose a template and start designing.