Coast Custom 12 Volt

Warwick, Toowoomba & the Southern Downs

Our 12V & Electrical Services

Coast Custom 12 Volt designs and installs custom 12V & 24V power systems for 4WDs, caravans, motorhomes, utes and vans. Fully mobile we come to your driveway, campsite, or workplace. No drop-offs required.

4.9★Google Rated
MobileWe Come to You
CompliantAS/NZS 3001.2:2022
Complete Victron off-grid power build
Custom 12v & 24V Off-Grid Systems

Complete off-grid builds designed around your vehicle, your trip length, and what you want to run. Solar, lithium batteries, inverter-chargers, monitoring, and wiring all done properly to AS/NZS 3001.2:2022 standard with a certificate of compliance every time.

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Solar panel installation on a caravan
Custom Solar Solutions

Rooftop solar for caravans, 4WDs, utes, vans, and campers. We supply and install panels with MPPT charge controllers as standard so your batteries charge all day from the sun. From small top-ups to 2000W+ arrays.

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REDARC DC-DC charger and inverter setup in a canopy
Charging, Inverters & Power Management

DC-DC chargers (REDARC, Victron Orion), MPPT solar controllers, mains chargers, and inverter-chargers installed properly for your setup. We specialise in charging systems for lithium batteries and vehicles with smart alternators.

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Dual battery system in a Toyota Landcruiser
Dual Battery & Charging Systems

A dedicated second battery, completely isolated from your starter battery, to power your fridge, lights, CPAP, and accessories. DC-DC charger included as standard. Designed for 4WDs, utes, caravans, and vans.

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Bushman 12V upright fridge
12V & 24V Fridges & Accessories

Authorised supplier and installer of Bushman 12V fridges. We also wire ARB fridges, compressor fridges, 12V & 24V water pumps, USB points, lighting circuits, and any 12V & 24V appliance your setup needs.

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Starlink Mini and connectivity install in a Ford Ranger
Starlink, Cameras & Connectivity

Starlink Mini integration with full mounting, cabling, and power supply. Dashcams, reversing cameras, and other connectivity installs. Everything wired neatly into your existing 12V & 24V system.

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Vehicle Types

Built for Real-World Use

Every system is designed around how you travel, what you need to power, and how long you want to stay off-grid. No cookie-cutter setups — every build is tailored to your vehicle and the way you use it.

Caravans and RVs
Caravans & RVs
4WDs and Utes
4WDs & Utes
Campers and Vans
Campers & Vans
Why Coast Custom 12 Volt

Proper 12V & 24V Work, Done Right

We specialise in custom 12V and 24V systems for caravans, 4WDs, touring canopies, campers and work vehicles. Every install is completed to AS/NZS 3001.2:2022 standards using proven components designed for real-world reliability. Built to handle corrugations, heat, dust and sustained off-grid use.

Toyota 79 Series Landcruiser Victron canopy offgrid build

Ready to Sort Your 12V & 24V Power?

Call Nathan for a free quote or send a message. Fully mobile across Warwick, Toowoomba, and the Southern Downs we come to you.

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