Tradie Ute and Van Electrics in Adelaide

This guide is for Adelaide tradies who run a ute or van as a mobile workshop. It covers powering tools from the vehicle with an inverter, keeping the battery healthy under extra loads, work and canopy lighting, and the South Australian rules on driving lights, light bars and amber beacons, so your setup is useful and legal.

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Your ute or van is a workshop on wheels

A tradie vehicle in Adelaide might start the day at a supplier in Edwardstown or Regency Park, spend the morning on a renovation in the eastern suburbs and finish on a new estate in the north. Along the way, it's charging tool batteries, running a fridge, lighting up a dark ceiling space and keeping a phone and tablet going. That's a lot to ask of an electrical system designed to start an engine and run a radio.

Getting the vehicle's electrics right means fewer flat batteries, fewer dead tool packs and a setup that doesn't put you on the wrong side of the rules.

Inverters for tools and chargers

An inverter turns your vehicle's 12V DC into 240V AC, so you can run chargers and small tools from the ute. For charging cordless tool batteries, laptops and phones, choose a pure sine wave inverter. Many chargers and electronic devices don't work properly, run hot or wear out faster on cheaper modified sine wave units.

Size the inverter for what you'll actually run at the same time, allowing for the startup surge of some tools. Remember that power drawn from the inverter comes out of the battery at a much higher current on the 12V side. A 1,000W load, for example, draws well over 80 amps from a 12V battery once losses are counted, so the cable must be heavy, short and fused close to the battery. Our guide on choosing and installing an inverter explains sizing and cabling.

Use an inverter only to run appliances plugged directly into it. Connecting an inverter to fixed 240V wiring, such as power points built into a van or canopy, is electrical work for a licensed electrician, and the installation has to meet the relevant standards.

Protect the starting battery

Running an inverter, fridge and lights from the starting battery while the engine is off is the quickest way to end up with a ute that won't start at the end of the day. Fit a second battery with a DC-DC charger, so tool charging and accessories run from the auxiliary battery while the starting battery stays full. See DC-DC charger or isolator for the options.

Many tradies also add a low-voltage cut-off to accessory circuits, and a simple voltmeter or battery monitor in the cab, so they can see the state of the battery at a glance. If your starting battery still keeps going flat, have the system checked; why a car battery keeps going flat lists the usual causes.

Work lights and canopy lighting

LED lighting has made it easy to light a canopy, tray or van interior without draining the battery. Strip lights inside a canopy and drawers, and a couple of rear-facing work lights, make loading and unloading early in winter mornings much safer.

Rear work lights and reversing lamps are not the same thing, and lights that are too bright or aimed badly can dazzle other drivers. Wire work lights on their own switch with an indicator in the cab, so you can't forget they're on when you drive away, and aim them down at the work area. Use a relay for higher-current lights; our guide on how to wire a 12V relay shows how.

Driving lights and light bars: the SA rules

The South Australian Government's page on driving lights and LED light bars sets out when additional driving lights, including LED light bars, can be fitted without approval. In summary, at the time of writing, the lights must comply with the Australian Design Rules and South Australia's light vehicle standards rules, and:

• You can fit up to four additional driving lights, and they must face forward and give out white light.
• They must be wired so they only work when the main (high) beam headlights are on.
• Where possible they should be mounted symmetrically in pairs at the front, or centred if there's only one.
• They must not protrude forward of the bumper bar or bull bar, and the page says they must not be fitted to the top of a bull bar or above the bonnet line.
• The page also says they may be fitted on the roof, provided they don't increase glare to the driver.
• The mounting must not increase the risk of injury to anyone.

Amber beacons and warning lights

Flashing or rotating amber beacons are common on utes used for roadside and site work, but on a public road they're not a general accessory. Under South Australia's Road Traffic (Light Vehicle Standards) Rules, a vehicle must not be fitted with a light that flashes unless a law allows it, and only a special use vehicle may have flashing yellow lights. That covers vehicles such as tow trucks, breakdown service vehicles and vehicles doing road work. Any other vehicle needs an exemption from the Minister for Infrastructure and Transport, so check with the Department for Infrastructure and Transport before you fit one. Red and blue flashing lights are for emergency vehicles, so never fit them to a work vehicle.

A beacon on a vehicle that only ever works inside a private yard or site is a matter for that site's safety rules, and many SA sites require one. Once the vehicle is driven on a public road, the rules above apply.

Also be aware of how other drivers respond to amber lights in South Australia. Since 19 May 2025, drivers must slow to 25 km/h when passing a stopped breakdown service vehicle or tow truck showing flashing amber lights. That rule is about breakdown services, so a beacon on a tradie ute doesn't give you the same protection. You can read about the 25 km/h rule on the SA Government's road rules page.

Getting your work vehicle set up

A good fit-out is planned as one system: battery, charging, inverter, lighting and switching together, with every circuit fused and labelled. That makes faults easier to find and keeps you within the rules. Auto electricians across the Inner West and Port and the Southern Suburbs fit out tradie vehicles regularly, so ask for a full quote before you start buying parts.

Parts for this job

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Get it done: get a quoteDo it yourself: shop amber beacons

Questions Adelaide drivers ask

Is an LED light bar legal on my ute in South Australia?

It can be. The SA Government says additional driving lights, including LED light bars, can be fitted without approval if they comply with the ADRs and SA's light vehicle standards rules. You can have up to four, they must face forward with white light, and they must only work with high beam. Mounting rules also apply, so check the SA Government's driving lights page before fitting.

Can I put an amber beacon on my work ute?

Only if it qualifies. In South Australia only special use vehicles, such as tow trucks, breakdown vehicles and road works vehicles, may be fitted with flashing yellow lights for public road use. Other vehicles need a ministerial exemption, so check with the Department for Infrastructure and Transport first. A beacon used only inside a private work site is covered by that site's rules.

What size inverter do I need to charge tool batteries?

Add up the wattage of the chargers and devices you'll run at the same time, then choose a pure sine wave inverter comfortably above that total. Most tool battery chargers need far less than a large inverter can supply. Remember the 12V side draws high current, so use heavy, short cable fused near the battery, and ideally run it from an auxiliary battery.

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