Electrical Wiring Diagram for Campervans
Design your off-grid electrical system in minutes instead of days.
✅ No more guess work
✅ Automatic wire & fuse sizing
✅ Clear overview of all connections
✅ 12V & 24V system voltage
✅ 240V | 230V | 220V | 120V
✅ metric or imperial: mm²/meters or AWG/feet
✅ Translated in: Deutsch, Français, Español, Italiano, Nederlands, Português, Polski
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In Brief:
Are you building your dream camper, but are you having trouble installing the electricity? Then this schedule is the solution for you! This diagram gives you a clear overview and makes installing your electricity easier. The diagram automatically calculates the cable thickness and fuse size, but that’s not all!
We will explain it in detail in a moment. But first we would like to introduce ourselves:
By Lotte and Gijs
Hi! We are Lotte & Gijs (and Noor 🐶). Over the past two years we have traveled through Europe in our self-converted Mercedes Sprinter camper.
While building our camper we encountered a number of challenges. Electrical information was spread across the internet and calculations were made in Google Docs, Excel files or even on scrap paper.
In 2021 we launched the Electrical Wiring Diagram for Campers, with which you can easily create complex electrical diagrams. Almost exactly four years later we proudly launch our Wiring Diagram Software!
What can you do with the Electrical Wiring Diagram software?
Nice to have met you 😄.
Before we start: the software is optimised for a computer/laptop, but can also be used on a tablet. A Phone is probably not the best choice.
That said, let’s get started: with the Electrical Wiring Diagram you can create your unique Electrical Diagram in no time. You can do the following with it:
General Settings
You can configure different voltage parameters:
✅ Alternator voltage: 12 V or 24 V
✅ System voltage: 12 V or 24 V
✅ AC voltage: 230 V or 120 V
✅ Choice of distribution options: Lynx Distributor or MIDI/MEGA fuse holder
Based on the selected voltages, specific components become available.
For example: if you choose an alternator voltage of 24 V and a system voltage of 12 V, you can then select a Victron Orion 24-12 | 30 or a Victron Orion XS 1400, as well as an inverter/charger suitable for a 12 V system voltage.
Inverters
You can select from several inverter/charger combinations:
✅ Victron MultiPlus: all variants available (up to 3000 VA on 12 V systems and 5000 VA on 24 V systems)
✅ Ective CSI / CSI Pro: all variants available
✅ Ective SSI / SSI Pro: all variants available
✅ Standalone inverters available in: 250 VA, 375 VA, 500 VA, 800 VA, 1000 VA, 1200 VA, 1600 VA, 2000 VA, and 3000 VA — plus 500 W, 1000 W, 1500 W, 2000 W, 2500 W, and 3000 W models
✅ Remote inverter control available via remote switch
✅ No inverter required? That’s also an option.
Solar Panels
You can select up to 5 solar panels, which can be wired in series or in parallel.
✅ Select up to 5 solar panels
✅ Wire them in series or parallel
✅ Optional switch between the solar panels and the charge controller
✅ MPPT charge controller is automatically calculated based on your input data
✅ Available panel sizes: 90 W, 100 W, 115 W, 120 W, 140 W, 150 W, 170 W, 175 W, 185 W, 200 W, 215 W, 250 W, 305 W, 330 W, 360 W, 420 W, 440 W, and 500 W
✅ No solar panels required? That’s also possible.
Charging via the Alternator
You can configure both the alternator voltage and the system voltage. Based on these settings, multiple charging options are available.
✅ Battery combiner: Victron Cyrix-CT 120 A (12 V–12 V & 24 V–24 V)
✅ Choose between: isolated or non-isolated DC-DC charger
✅ Available DC-DC chargers: all Victron Orion and Victron Orion XS models, plus the Ective BB series
✅ No alternator charging required? That’s also possible.
Standalone Battery Charger
If you don’t want to use an inverter, or prefer a separate inverter while still using shore power, you can select a standalone battery charger.
✅ Available in: 15 A, 20 A, or 30 A
✅ No standalone charger needed? That’s also possible.
12 V or 24 V Applications
You can connect up to 10 DC devices, such as:
✅ USB chargers
✅ LED lighting
✅ Reading lights
✅ Fridge
✅ Roof fan (MaxxFan)
✅ Water pump
✅ Diesel heater
✅ Your device not listed? No problem — you can also add your own custom device.
Additionally, you can include a BatteryProtect or add a switch to the circuit.
Additional Features
In addition to all the options above, several other functions are available:
✅ Select whether you want a remote control for your inverter
✅ Choose your battery type: Lead-acid or Lithium
✅ Select up to 5 batteries
✅ Easily add a battery monitor, Victron SmartShunt, or Victron Cerbo GX
✅ Protect your (lead-acid) battery with a BatteryProtect
✅ Comprehensive shopping list — easily purchase all your selected components*
✅ Cable sizes are calculated automatically
✅ Fuse ratings are automatically determined
Experiences from other camper builders:
Electrical Wiring Diagram
Diagram provided with an inverter and battery charger. Universal in use: compatible with all brands of inverters, charge controllers and battery chargers.
€39,95
- Wire size and fuses calculated
- Order overview: cables, fuses etc
- Diagram drawn correctly
- Personal contact for questions
- Save an average of 6 hours
Electrical Wiring Diagram Software
Make your unique Electrical Wiring Diagram.
Temporary for just:
€67
€49
- 365 days access
- Wire size and fuses calculated
- Diagram drawn correctly
- Free updates during access
- Personal contact for questions
- Save an average of 6 hours
Ective SSI Wiring Diagram
This Wiring Diagram equipped with an Ective SSI. This (German brand) unit is an excellent alternative for a Victron MultiPlus: more options for less money.
€39,95
- Wire size and fuses calculated
- Order overview: cables, fuses etc
- Diagram drawn correctly
- Personal contact for questions
- Save an average of 6 hours