Camper van electrical wiring made simple
Design a safe, reliable 12V electrical system for your van build with drag-and-drop simplicity and real-time safety validation.
What you can design
- ✓ Full van conversion electrical system
- ✓ Adding solar panels to a camper van
- ✓ Wiring a leisure battery and split charge system
- ✓ Installing a DC fuse box for multiple circuits
- ✓ Powering appliances with an inverter
Why van lifers love No-Sparks
Building out a camper van electrical system can feel overwhelming. Between choosing the right wire gauge, sizing your fuse box, and making sure your solar charge controller is properly connected, there are dozens of decisions that affect safety and performance.
No-Sparks takes the guesswork out of van electrical design. Drop in your components — solar panels, MPPT charge controller, leisure battery, DC fuse box, inverter — and the tool validates your wiring in real time. It checks for undersized cables, missing fuses, and incorrect connections before you crimp a single wire.
Common van build electrical setups
Whether you’re building a weekend warrior with a simple solar and battery setup, or a full-time live-in van with dual charging from solar and alternator, No-Sparks has you covered. Start with one of our example diagrams and customize it to match your components.
Typical components in a van build
- Roof-mounted solar panels — 100W to 400W depending on power needs
- MPPT charge controller — maximizes solar harvest
- Lithium leisure battery — 100Ah to 400Ah for house power
- DC-DC charger or split charge relay — charges from alternator while driving
- DC fuse box — distributes power to individual circuits
- Inverter — converts 12V DC to 240V/120V AC for laptops, blenders, and more
- Auxiliary battery monitor — tracks state of charge
Start your van build wiring diagram
Open the editor, drag in your components, and connect them. No-Sparks validates everything as you build — no electrical engineering degree required.
Van life wiring diagram examples
Dual Charging System
Solar and alternator charging with bus bar distribution
Simple Solar Setup
Basic solar charging system with battery and one load
Small Van Setup
Complete camper van system with solar, multiple loads, and AC inverter
Full Van Build
Complete van electrical system with solar, alternator charging, battery monitor, and full distribution
Split Charge Relay Setup
Charge a leisure battery from your engine alternator while driving
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Ready to design your Van life electrical system?
No signup required. Start building your wiring diagram right now.
Open the editor