IATRT Operations Pty Ltd · Electronics design & repair 4/143 Coonawarra Rd, Winnellie NT 0820 · 08 7918 8590 Rev 2026.09

Caravan electrician · Winnellie, Darwin

Caravan & Campervan Wiring Darwin

Batteries, solar, chargers, inverters, fridges and lights for caravans, campers, motorhomes and slide-ons. From one dead socket to a full off-grid build, at our Winnellie workshop.

Passing through and something’s stopped working? Drop in. We see a lot of visiting vans in the dry season and we’d rather find the fault here than have you find it at Daly Waters.

What we fix

From a single circuit to a full off-grid build.

Batteries and charging

Lithium (LiFePO4) and AGM banks sized for how you travel, charged from the car through a DC-DC charger and from the roof through solar. Redarc, Victron, CTEK and Enerdrive-class gear, with a shunt monitor so you can see what’s going on.

Solar

Fixed panels, portable blankets and the regulator to match, planned around shade and the size of your battery rather than what was on special.

Inverters and 240V appliances

Pure sine-wave inverters for coffee machines, induction cooktops, CPAP machines and tools, cabled and fused for the current they actually draw. Inverter-charger combos with shore-power changeover.

Fridges, lights, pumps and outlets

12V fridge circuits (Dometic, Engel, Bushman), LED lighting, water pumps, diesel heater controls, fans, USB-C and 12V outlets, each on its own fuse with a label.

Tow vehicle and trailer wiring

7-pin and 12-pin plugs, Anderson charge lines, electric brake controllers (Redarc Tow-Pro, Tekonsha), breakaway systems and trailer lights, tested with the van hooked up.

Reversing cameras and comms

Wired and wireless reversing cameras, multi-camera setups, UHF, and Starlink or phone-signal boosters with a proper power feed.

Fault-finding

Nothing works since the trip, the charger works on the bench but not in the van, a melted Anderson plug, a BMS that won’t talk to the inverter. We measure voltage drop and current draw and find it.

Repairs, not just replacements

Chargers, inverters and control boards repaired at the component level through our electronics workshop when a new one isn’t justified.

Pre-trip checks and upgrades

A once-over before a long trip, or an upgrade path from an old AGM and a small panel to lithium, DC-DC and better solar without starting again.

Full builds

Camper trailers, slide-ons, van conversions and 4WD touring rigs planned on paper first: wiring diagram, parts list, then install and commissioning. You get the diagram and a fuse map at the end.

How it works

Talk first. Then wire it once, properly.

01

Tell us how you travel

Fridge size, days between powered sites, what you cook with, what you tow. That decides the battery and the charging, not the catalogue.

02

Written plan and quote

For builds, a wiring diagram and a parts list before any cable is cut. For faults, a free diagnosis and a quote for the repair.

03

Install, test, hand over

Correct cable sizes, proper crimps, everything fused and labelled, tested under load, and documented so the next person can find their way around.

Prices

What it costs

Diagnosis and written quote
Free
Workshop labourParts quoted on top before you approve.
from $150
Battery, solar and inverter systemsDepends on the gear. A written quote covers parts, labour and commissioning.
Quoted per job

On-site visits for vans that can’t be moved are quoted separately.

Questions

Common questions

Lithium or AGM?

Lithium if you run a fridge and free-camp for days at a time; it’s lighter, charges faster and lasts longer. AGM still makes sense for a van that mostly lives on powered sites. We’ll tell you which, based on how you travel.

Why does my battery go flat even with solar?

Usually shade, an undersized panel, a regulator that doesn’t match the battery, or a cable run that drops too much voltage. We measure each stage and fix the one that’s actually the problem.

Can you do the tow vehicle as well as the van?

Yes. Anderson charge lines, brake controllers and trailer plugs on the car are part of the same job. See auto electrical.

We’re travelling through Darwin. Can you look at it this week?

Usually. Call first and tell us what’s happening; small faults can often be seen the same day.

How big a van can you fit?

The bay out the front takes a rig up to 12 m long and 5 m wide, so most motorhomes fit and so does a caravan still hitched to the tow vehicle. Come around to the Mataram St side and pull up in front of the roller door. Bigger than that, call first and we’ll work out where to put it.

Do you install 240V shore power?

We fit and commission the 12V and electronics side and can include shore-power inverter-chargers. Any fixed 240V wiring is done by a licensed electrician, which we arrange when the job needs it.

Will you give me a wiring diagram?

Yes, on every build. It’s the thing the next technician, or you at 10pm in a campground, will thank us for.

Where we work

Darwin, Palmerston and the rural area.

Bring the van to Winnellie — the bay out the front takes rigs up to 12 m long and 5 m wide, so you can leave the van hitched to the car. Or we come to you across Darwin, Palmerston, Howard Springs and Humpty Doo. Storage yards and caravan parks are fine.

Contact

Address
4/143 Coonawarra Rd
Winnellie NT 0820

Phone
08 7918 8590

Email
inquiries@iatrt.com

Hours
Monday–Friday, 9:00am–5:00pm
Closed weekends & public holidays

Before you come in

Bring the van, or photos of the battery box and the charger labels. Model numbers let us check parts before you arrive.

Finding us: we’re the end unit of the 143 Coonawarra Rd complex, on the Mataram St corner — the same block as Top End Car Rentals and Campervan Hire. Bring the van around to the Mataram St side and park on the hardstand in front of the unit; it fits a rig up to 12 m long and 5 m wide. Anything longer, give us a call before you drive over.

Diagnosis is free. For builds you get a diagram, a parts list and a written quote before we cut a single cable.