Darwin Service
Caravan & Campervan Wiring Darwin
Full 12V / 24V DC and 240V electrical for caravans, campervans, motorhomes, slide-ons, camper trailers, and 4WD touring setups — from our Winnellie workshop.
We design, install, and fault-find caravan and campervan electrical systems from one socket through to a full off-grid build. That includes battery banks (AGM and lithium), solar, DC-DC chargers, inverters, 240V shore-power hookups, fridges, lights, water pumps, fans, USB and accessory circuits, BMS integration, monitoring, tow wiring, brake controllers, breakaway systems, and reversing cameras.
Because we're an engineering shop and not a swap-only retailer, when something's playing up we diagnose at the component level — melted plugs, dodgy fuse holders, voltage drop across an undersize run, a charger that "works on the bench but not in the van", a BMS that won't talk to the inverter. Honest scope, honest replace-vs-repair calls, and documented wiring for the next person who works on the van.
Service scope
From a single accessory circuit to a full off-grid touring build.
Batteries & Charge Systems
- Lithium (LiFePO4) and AGM battery banks — sizing, install, BMS integration, monitoring
- DC-DC chargers from the tow vehicle — Redarc, Victron, CTEK, BCDC-class units
- Solar arrays — fixed and portable, MPPT regulator sizing, parallel/series planning, shading-aware design
- Battery monitoring (shunt-based) with Bluetooth or wired display
- Isolators, fuses, busbars, and protection sized for actual cable runs and battery type
Inverters & 240V Systems
- Pure sine-wave inverter sizing and install for kettles, microwaves, induction cooktops, tools, and CPAP
- 240V shore-power hookups — powered-site sockets, RCD/MCB protection, internal 240V circuits
- Inverter / charger combo units (Victron MultiPlus, Renogy, similar) with shore-power transfer
- Generator-input wiring and proper isolation between sources
- Repair of failed inverters at component level via electronics repair where economic
Interior Circuits & Appliances
- LED lighting circuits, dimmers, reading lights, awning and external lights
- 12V/24V fridge install (Dometic, Engel, Bushman, Waeco) with proper cable sizing
- Water-pump wiring, diesel-heater control, fan and roof-vent circuits
- USB-A, USB-C PD, accessory sockets, and 12V cig-style outlets with appropriate protection
- Wiring diagrams handed over so the next technician (or you) can find a fault later
Tow Vehicle & Trailer Wiring
- Trailer plugs — 7-pin flat, 12-pin flat, 7-pin large round — correctly pinned for the van
- Anderson plug install for charge-line and high-current accessory runs, properly fused
- Electric brake controllers (Tekonsha, Redarc Tow-Pro) install and calibration
- Breakaway-system wiring and battery testing
- LED tail/stop/turn upgrades, marker lights, and trailer-light fault-finding
Reversing Cameras & Comms
- Reversing-camera install on caravans, campervans, and trailers — wired and wireless
- Multi-camera systems (rear, side, hitch view) with monitor in the tow vehicle
- UHF, mobile-signal boosting, and Wi-Fi for touring — mounting and antenna planning
- Starlink and similar satellite-internet install with proper power supply and mounting
- External speaker and amp-rack wiring where required
Fault Finding & Repair
- "Nothing works since the trip" diagnosis — full chain testing from solar through to load
- Voltage-drop and current-draw measurement on suspect circuits
- Failed fuse holders, melted Anderson plugs, charred crimp lugs — rebuilt properly with correct lug, crimp, and cable size
- BMS / inverter / charger comms troubleshooting (VE.Direct, VE.Can, RS-485, CAN)
- Component-level repair of failed control boards, displays, and chargers where worth it
Pre-Trip Inspections & Upgrades
- Pre-departure electrical check before a long trip — the time to find a problem is in the workshop, not at Daly Waters
- Upgrade paths from old AGM + small panel to modern lithium + DC-DC + better solar
- Cable resizing where existing runs are causing voltage drop or running hot
- Documentation of what's installed, fuse map, and how to recover after a flat-battery event
Builds & Customisation
- Full off-grid camper builds — planning, parts list, install, commissioning
- Camper-trailer, slide-on, and 4WD touring electrical fit-outs
- Custom switch panels and small fabrication via our R&D workshop
- Repeatable wiring looms for fleet caravan and small commercial builders
Why us, specifically
- Engineering background, not just sales — we'll explain trade-offs, not push the most expensive option
- Marine-grade habits carried over from our marine systems work — salt-air-aware terminations and waterproofing
- Component-level repair capability means more chargers and inverters get fixed, not landfilled
- Documented handover so the next mechanic, electrician, or owner can pick it up cold
Consultations
Free consultation by phone or at our Winnellie workshop. On-site callouts are charged separately. The initial consultation confirms scope and the most appropriate next step before any chargeable work begins.
For full builds we lay out a wiring plan and parts list before cable gets cut.