Offroad & 4WD Auto Electrician in Townsville

Townsville 4WD Auto Electrician

Shannon’s Auto Electrical in Townsville provides 4WD auto electrician services for touring, towing and offroad use. We design and install fused dual battery systems, lighting, outlets and brake controllers using compliant wiring practices and quality parts for reliability on 4WDs.

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Dual Battery Systems

Power fridges, lighting and accessories with a correctly sized dual battery setup. We specify batteries, isolators and DC chargers to match your vehicle and loads, then install fused cabling and outlets to support safe touring and weekend trips.

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Lighting & Visibility

Improve night driving and camp usability with quality light bars, spotlights and work lights. We plan beam patterns, install relays and switches, and route wiring for durability, so you gain clearer vision without overloading circuits or creating glare.

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Towing & Touring Electrics

Prepare for towing and long trips with electric brake controllers, Anderson plugs and dedicated fridge or compressor feeds. We configure plug types, cable gauges and protective fusing to suit caravans, campers and trailers used in regional conditions.

Our Work

Practical Offroad Upgrades

We assess charging needs, accessory loads and mounting options before installation. Expect clear quotes, tidy wiring looms, protective conduit and secure earth points. Our process prioritises serviceability and compliance, so future accessories can be added without reworking existing circuits.


Diagnostics and testing confirm correct voltage drop, charging rates and switch operation. We label circuits, document fuse ratings and provide basic usage guidance for new setups. For reliable 4WD electrics that suit real travel, call 07 4725 1780 today. Keep your trips simple and safe.

Frequently Asked Questions

  • Do I need a dual battery system for a 12V fridge?

    A dual battery system protects the starter battery from being drained by a fridge, lights or compressor. Using a DC to DC charger ensures the auxiliary battery receives the right charge profile, which helps battery life and fridge performance.

  • What size light bar is legal on public roads?

    Light bar rules vary by jurisdiction. In Queensland, auxiliary driving lights must be securely mounted, correctly aimed and only used with high beam where safe. Check current Queensland road rules and your vehicle’s mounting points to avoid glare and overhang issues.

  • Is an electric brake controller required for towing?

    Most trailers over 750 kg GTM require brakes, and electric brakes need a compatible in-vehicle controller. A correctly installed controller improves braking balance and control, especially on descents and in emergency stops. Always check your trailer’s compliance plate and local requirements.

What Our Clients Say