Mobile Auto Electricians · Hunter & Central Coast
Earthmoving Auto Electrician
Excavator won’t start, a dozer throwing fault codes, or a grader with a charging system failure mid-shift? RAM Auto Electrical provides mobile earthmoving auto electrical services across the Hunter Valley and Central Coast — coming directly to your worksite, mine site or depot so your plant gets back to work without the tow.
On-Site
We come to your plant
100%
Mobile, no workshop needed
2 regions
Hunter Valley & Central Coast
ROOT-CAUSE EARTHMOVING DIAGNOSTICS
Find the real fault. Fix it properly. Keep the machine in the ground.
15+
Years diagnosing plant, trucks & heavy equipment
About RAM
Heavy equipment auto electrical — diagnosed properly, fixed on your site.
RAM Auto Electrical is a fully mobile auto electrical service built for civil contractors, plant hire operators, and fleet managers across the Hunter Valley and Central Coast. When a piece of earthmoving plant goes down, the last thing you need is a tow to a workshop and a week in the queue. We load the van with OEM-level diagnostic equipment, carry parts for the most common heavy plant faults, and head straight to wherever the machine is sitting. Whether it’s a CAT excavator throwing a CAN-bus fault on a Maitland civil site or a Komatsu dozer with a failed alternator at a Hunter Valley quarry, we diagnose and repair earthmoving electrical faults on-site — no unnecessary delays, no guesswork parts-swapping.
- ECU & CAN-bus fault diagnosis on-site
- Fully stocked mobile service van
- Emergency breakdown response available
- Civil, mining & plant hire contractors welcome
WHAT WE DO
Auto electrical work, end to end — without the workshop wait.
Diagnostics & Repairs
Warning lights, no-starts, intermittent faults — diagnosed properly and fixed once.
Wiring & Loom Repair
Heat-damaged, rodent-chewed, or modified looms repaired to factory standard.
Battery & Charging Systems
Dual battery setups, DCDC, lithium, alternators and starter motors.
Heavy Vehicle & Plant
Trucks, excavators, dozers and civil machinery on site.
4WD & Auxiliary Fit-outs
Driving lights, UHF, winches, fridge wiring, canopy and tray builds.
Emergency Callouts
Down on a job? We redirect and prioritise so you’re not waiting around.
RECENT WORK
From the van — jobs done right.
Earthmoving Equipment We Service
We work on a wide range of heavy plant across the Hunter and Central Coast — from compact excavators to large dozing and grading machines. Brands and machine types we regularly attend to include:
- Caterpillar (CAT) – excavators, dozers, motor graders, scrapers, wheel loaders
- Komatsu – hydraulic excavators, crawler dozers, dump trucks, graders
- Hitachi – excavators and mining shovels
- Liebherr – crawler and wheeled excavators, dozers
- Volvo CE – articulated haulers, excavators, wheel loaders
- John Deere – graders and construction excavators
- Case Construction – backhoe loaders, excavators, compactors
If your machine isn’t listed, call us — if it has an electrical system, we can work on it.
Earthmoving Loom & Wiring Repairs
Earthmoving Auto Diagnostics
Earthmoving Custom Canopy Builds
Earthmoving Heavy Plant On Site
Earthmoving 4WD Light Fit-outs
Earthmoving Dual Battery Systems
FLEET & CONTRACTS
Built for fleet managers, civil contractors & plant hire.
Earthmoving Electrical Services We Provide
From fault codes on a CAT ECU to a blown wiring loom on a Komatsu excavator, we handle the full range of auto electrical work that keeps heavy plant running. Every job starts with a proper diagnosis — we identify the root cause before any parts go on, because fitting components to a symptom wastes your money and your time. Below is a breakdown of the electrical services we carry out on earthmoving equipment across civil construction, quarrying, and plant hire operations in the Hunter Valley and Central Coast.
Fault Diagnosis & ECU / CAN-bus Diagnostics
Modern earthmoving plant runs on sophisticated electronic control systems. We carry OEM-compatible diagnostic tools capable of reading and clearing fault codes on CAT, Komatsu, Hitachi and other major brands — including CAN-bus network faults that generic scanners simply can’t interpret. We don’t clear codes and hope for the best; we trace the fault to its source, whether that’s a failed sensor, a wiring issue, or an ECU problem.
Alternator & Starter Motor Repair
A machine that won’t crank or can’t maintain charge is dead weight on site. We test and replace alternators and starter motors on heavy plant on-site, checking the full charging circuit — cables, connections, regulator, and battery bank — so the replacement component isn’t being asked to carry a pre-existing problem.
Wiring Harness Repair & Replacement
Earthmoving equipment works in harsh, abrasive conditions. Chafed, rodent-damaged, or heat-affected wiring looms are one of the most common causes of intermittent electrical faults on plant. We trace, repair, and where necessary replace sections of wiring harness — with proper sleeving, loom tape, and weatherproof connectors suited to the operating environment.
LED Work Light & Safety Light Installation
Visibility and compliance matter on civil and mining sites. We supply and install LED work light bars, spot lights, and perimeter lighting on excavators, dozers, and other plant — wired back properly through the correct fuse protection, not tapped into whatever wire is closest.
Air Conditioning Electrical Systems
Operator cabin A/C failures in a Hunter Valley summer are a safety and productivity problem. We diagnose and repair the electrical side of heavy plant air conditioning systems — blower motors, control modules, pressure switches, and wiring — and can advise on regas and mechanical work referrals where needed.
GPS / Telematics & Fleet Tracking Installation
Plant hire companies and civil contractors across the Hunter and Central Coast increasingly rely on GPS tracking and telematics for fleet visibility and utilisation reporting. We install and integrate tracking systems cleanly into earthmoving equipment, ensuring proper power supply and no interference with existing machine electronics.
Battery & Charging System Testing
A failing battery bank on a large excavator or dozer often presents as a starting fault or erratic electrics before it becomes a total failure. We carry professional battery load testers and can assess the full charging system — alternator output, battery condition, and cabling integrity — giving you a documented report of what needs attention and what’s still serviceable.
Hydraulic Sensor & Solenoid Repair
Hydraulic system faults on earthmoving plant frequently have an electrical origin — a failed solenoid valve, a damaged pressure or temperature sensor, or wiring damage from abrasion near the hydraulic lines. We diagnose these faults properly using live data from the machine’s ECU rather than guessing which solenoid to change, saving both parts cost and downtime on site.
Consistent service
Priority bookings
On-site coverage
SERVICE AREAS
Hunter Valley & Central Coast — covered.
Mobile & On-Site Breakdown Response for Earthmoving Plant
When earthmoving plant stops, every idle hour has a real cost — in hire rates, subcontractor delays, and project deadlines. We operate across the Hunter Valley and Central Coast and respond directly to worksites, quarries, depots, and civil construction sites. There’s no need to arrange a float, no workshop queue, and no waiting on a third-party assessment before the repair can start. We travel between both regions regularly, and for plant hire operators or civil contractors with ongoing work, we can arrange priority response arrangements that fit your project schedule. Call us directly with the machine location, fault description, and machine make and model — we’ll give you an honest ETA and a rough scope over the phone before we arrive.
Earthmoving Auto Electrician – Frequently Asked Questions
What earthmoving equipment do you work on?
We work on a broad range of heavy plant including excavators, crawler dozers, motor graders, wheel loaders, scrapers, and articulated dump trucks. Brands we regularly service include Caterpillar, Komatsu, Hitachi, Liebherr, Volvo CE, John Deere, and Case. If you’re unsure whether we can help with your specific machine, just call — we’ll tell you straight away.
Do you come to the job site?
Yes — that’s the whole point. RAM Auto Electrical is a fully mobile service. We come to your worksite, mine site, depot, or wherever the machine is located across the Hunter Valley and Central Coast. There’s no need to transport the plant to a workshop.
Can you diagnose CAT or Komatsu ECU faults?
Yes. We carry OEM-compatible diagnostic tooling for major earthmoving brands including Caterpillar and Komatsu. We can read live data, pull fault codes, and trace CAN-bus communication faults on-site — giving you a root-cause diagnosis rather than a list of possible causes to work through one by one.
Are you licensed and insured?
Yes. RAM Auto Electrical carries the appropriate auto electrical licences and insurance for mobile work on heavy plant across NSW. We’re happy to provide documentation for site induction requirements on request.
Hunter Valley
- Maitland
- Singleton
- Kurri Kurri
- Pokolbin
- Cessnock
- Muswellbrook
- Branxton
- Raymond Terrace
Central Coast
-
Gosford
-
Tuggerah
-
Wyong
-
The Entrance
- Erina
- Terrigal
- Woy Woy
- Bateau Bay
HOW WE WORK
Straight forward. No runaround.
01
Get in touch
Call or message with the machine type, its location on site, and a description of the fault or symptom — even ‘it just stopped’ gives us a starting point.
02
Quick quote & booking
We give you an honest ETA and a rough scope over the phone — no vague callbacks, no waiting on someone to check the schedule.
03
Mobile callout
We arrive on site with OEM-compatible diagnostic tooling and parts for the most common heavy plant electrical faults — ready to start work, not just assess.
04
Sorted properly
Machine tested, fault documented, and the cause explained clearly — so your site supervisor, plant manager, or hire company has a proper record of what was found and what was done.
What our clients are saying
Trusted by businesses, fleet operators, and vehicle owners across the Hunter Valley and Central Coast, RAM Auto Electrical is proud to deliver reliable service, fast response times, and quality workmanship every time.
GET IN TOUCH
Whether it's urgent or planned — we're ready to hear from you.
For plant hire operators and civil contractors, documented repairs matter — whether it’s for a hire agreement, a site safety record, or simply knowing the machine won’t fail again in the same way next week. We provide clear fault documentation on every job. If you manage a fleet or run ongoing civil works across the Hunter Valley or Central Coast, get in touch with RAM Auto Electrical to discuss a standing arrangement. Call during business hours for the fastest response — if we’re mid-job and can’t answer immediately, a text with the machine details and location means we can call back with useful information straight away.
Call us
0408 399 699
Email
riley@ramautoelec.com
Service area
Hunter Valley · Central Coast
GET A QUOTE FOR EARTHMOVING ELECTRICAL WORK
Include the machine make, model and year, your site location, and a description of the fault or job required. For plant hire companies and contractors with multiple machines, note the fleet size — we can discuss a service arrangement that suits your operation.