Cane Season Ute and Tractor Electrics Around Mackay

This guide is for cane growers, contractors and farm workers around Mackay, the Pioneer Valley and Sarina. It covers getting utes, tractors and haulout gear electrically ready for the crush, keeping lights working for early and late runs, and the Queensland rules for farm machinery on public roads.

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The crush changes how your machines work

The Mackay crushing season usually gets going in June. In 2023, for example, the local mills were scheduled to start between 1 and 8 June. Once it starts, harvesters, haulout tractors and farm utes go from sitting in the shed to working long days, often for months on end.

Local reporting in 2023 described haulouts and cane locos on some early and late lines running from as early as 2am until late at night. That means a lot of farm work happens in the dark, on farm tracks and on public roads. Lights, batteries and charging systems that were fine for a few jobs in the slack season now get worked hard every day.

Waking machines up after the slack season

A tractor or haulout that has sat for months often comes out of the shed with a flat or tired battery. Batteries left partly discharged for a long time lose capacity, and the first hard crank of the season can finish off a weak one. Test batteries before the crush rather than on the first morning. Our guide on how to test a car battery covers the basics, and the same ideas apply to farm machinery.

Rats and mice love a quiet shed full of machinery. Check under bonnets and around wiring looms for nests and chewed insulation before you start anything. A chewed wire can cause a short or a fire once the machine is running. Our guide on rodent damage to car wiring shows what to look for.

• Test and charge every battery, including ones in spare machines.
• Clean and tighten battery terminals and earth straps.
• Look for chewed wiring, nests and droppings around looms and fuse boxes.
• Check all work lights, headlights, tail lights and indicators.
• Run the machine and confirm the charging system is putting out a healthy voltage.

Lights for dark starts and late finishes

When you're hauling before sunrise or after sunset, lights stop being optional. Worn or misaimed headlights, failed tail lights and dirty lenses make farm machinery hard for other drivers to see and judge. Old halogen work lights also draw a lot of current, and on an older tractor with a small alternator, a full set of them can drain the battery at slow speeds.

LED work lights draw much less and stand up better to vibration. If you upgrade, wire them through a relay with a fuse close to the battery, rather than running the full current through an old dash switch. Our guide on wiring a 12V relay walks through it. Keep lenses clean during the season, because dust and cane trash build up quickly. Check the tail lights, brake lights and indicators on haulout bins and trailers too. A dead brake light on a slow machine in the dark is a real hazard for the driver behind.

Tractors and harvesters on public roads

In Queensland, agricultural vehicles that are used on a road must be conditionally registered. The Queensland Government notes that a road includes places like railway crossings, so even a short hop across a road or crossing between paddocks counts. Its agricultural vehicles page lists the types covered, including tractors, cane harvesters and infield cane transporters, each with its own information sheet.

Conditional registration comes with conditions about where and when a vehicle can travel, and some conditions don't allow travel between sunset and sunrise. Heavier and wider machines may also fall under heavy vehicle exemptions with their own lighting and warning requirements. The details depend on the machine, so read the information sheet for your vehicle, see conditional registration explained, and check the current rules before you head out on the road.

If you're thinking about adding flashing amber beacons, check first. Queensland limits which vehicles can be fitted with flashing yellow warning lights, so don't assume a beacon is allowed just because it seems sensible.

Farm utes doing double duty

During the crush, the farm ute often becomes a mobile workshop. It carries a UHF radio, a 12V spray unit or transfer pump, work lights and sometimes a fridge, all running off the starting battery. On short trips between paddocks the alternator doesn't have long to recharge, and you end up with a ute that won't start at the end of a long day.

A dual battery system keeps your accessories off the starting battery. Wire pumps and other heavy loads with cable sized for the current and the length of the run, and fuse each circuit. Dust gets into everything in cane country, so use sealed connectors and fuse holders where you can.

Harvesters and haulouts get washed down often during the season. Keep the pressure washer lance well back from connectors, alternators, starter motors and control boxes, and give electrical parts time to dry before you start the machine.

Cane train crossings and haulout traffic

Cane railway lines cross many roads and farm tracks around Mackay. Cane trains are long and heavy and can't stop quickly, so always look properly before crossing, even on a line you use every day. If you're driving a tractor or haulout, make sure your mirrors, lights and indicators work so you can see and be seen at crossings.

If you're on the road in a car, expect slow-moving tractors and haulouts during the season, especially around Marian and Sarina. Be patient and only overtake when it's clearly safe.

When to call an auto electrician

Call in help for charging system faults you can't trace, intermittent electrical faults on harvesters and haulouts, and any wiring that has been damaged by rodents or heat. Booking a pre-season check in April or May is easier than finding someone mid-crush when everyone is busy. Many auto electricians will come out to the farm.

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Questions Mackay drivers ask

Does my tractor need to be registered to cross a road in Queensland?

If an agricultural vehicle is used on a road, it must be conditionally registered in Queensland. The Queensland Government says a road includes places like railway crossings, so a short trip across a road between paddocks still counts. Conditions apply to where and when you can travel. Check the information sheet for your type of machine and the current rules before using it on a road.

Why won't my tractor start at the start of the crush?

The most common cause is a battery that sat partly discharged through the slack season and lost capacity. Corroded terminals and earths, and wiring chewed by rodents, are the next things to check. Test and charge batteries a few weeks before the season, clean the connections and look over the wiring before you need the machine.

Are LED work lights worth fitting to an older tractor?

Usually, yes. LEDs draw much less current than old halogen work lights, which matters on older tractors with small alternators that work at low revs. They also cope better with vibration. Wire them through a relay and a fuse close to the battery, and use sealed connectors to keep dust and moisture out.

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