4.9 stars from 200+ Sydney reviews

Your car's electrical system fixed right the first time. test handles everything from dead batteries to complex CAN bus faults.

Stop guessing what's wrong. We find it, fix it, and get you back on the road.

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Same-Day Service Available

Mobile service — we come to you All makes and models diagnosed and repaired No hidden costs, transparent pricing upfront

Free Quotes

Fast Response

Local SYDNEY, NSW 1001 Business

Our Services

Complete Auto Electrical Solutions for Sydney

test handles every electrical fault on modern and classic vehicles. From simple battery replacements to complex ECU diagnostics, we've got your car covered across Sydney and surrounding areas.

Battery Testing & Replacement

Wake up to a reliable start

A weak battery ruins your day. We test your battery and charging system on the spot, then install a quality replacement if needed. Every battery comes with proper warranty coverage and fits your vehicle's specifications.

Alternator & Starter Motor Repair

Charge and crank sorted fast

Your alternator isn't charging or your starter motor won't turn—either way, you're stranded. We diagnose the fault and repair or replace the component quickly. All repairs include a warranty and work on every make from Japanese to European vehicles.

Wiring Fault Diagnosis

Every wire traced, every fault found

Mysterious electrical gremlins, warning lights, or intermittent faults? We use diagnostic equipment to trace wiring faults and find the real cause—not just the symptom. We then repair it properly so it stays fixed.

Air Conditioning Electrical Repairs

Cool down without the mystery

AC not blowing cold? The compressor won't engage? We diagnose electrical faults in your air conditioning system—compressor clutch issues, refrigerant pressure switches, and wiring faults. Get your cabin cool again.

Car Alarm & Immobiliser Systems

Secure and starting properly

Alarm won't arm or disarm? Immobiliser acting up? We repair and reprogram alarm systems and immobilisers on all makes. If your car won't recognise your key, we diagnose and fix it.

LED & HID Lighting Upgrades

See better, look sharper

Upgrade to modern LED or HID headlights for better visibility and style. We handle the full installation—ballasts, harnesses, and coding—so everything works perfectly. All upgrades are road-legal and tested.

Trailer Plug & Wiring Installation

Tow safely and legally

Need to tow a trailer? We install trailer plugs and wiring harnesses to Australian standards so lights and brakes work correctly. Perfect for caravan setups or utility trailers.

Dual Battery Systems for 4WDs

Power for the outback

Heading off-grid? A dual battery setup keeps your fridge, lights, and winch running independently. We design and install systems tailored to your 4WD—isolators, relays, and quality batteries included.

ECU Diagnostics & Reprogramming

Computer faults solved

Check engine light won't go away? Performance issues after an accident? We diagnose ECU faults and reprogram controllers on modern vehicles. We work on latest models from Toyota to BMW.

CAN Bus Fault-Finding

Modern wiring problems fixed

CAN bus faults cause intermittent warnings and strange behaviour. We use specialist diagnostic equipment to find communication faults between modules and repair them correctly—no more guessing.

Switchboard Upgrades & Installation

Modern safety, done right

Upgrading your vehicle's electrical system? We install switchboards, fusebox upgrades, and auxiliary circuits to Australian standards. All work includes RCD safety switches and surge protection.

Emergency Mobile Service

Roadside fixes you can trust

Broken down in Sydney? We come to you for emergency repairs—battery, alternator, starter issues, and more. Most calls fixed on-site; same-day service available for urgent work.

About test — Auto Electrician in SYDNEY, NSW 1001

About Us

Three Generations of Auto Electrical Expertise

test was built on a simple idea: fix cars properly the first time. We've spent years working across Sydney and surrounding areas—Parramatta, Penrith, Bankstown, the inner west—learning every electrical fault that modern and classic vehicles throw at us. Whether it's a simple battery replacement or a complex CAN bus fault that's stumped other workshops, we get to the root cause and fix it. Our team knows the frustration of a car with electrical gremlins. That's why we offer transparent pricing, mobile service so you don't have to trek to us, and the straight truth about what needs doing. Your car's electrical system is the nervous system of the whole vehicle—we treat it that way.

Ready to Get Started?

Request a free, no-obligation quote today.

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Portfolio

Work We've Done

Battery & Alternator Replacements

Switchboard & Wiring Upgrades

4WD Dual Battery Systems

LED & HID Lighting Installs

ECU & CAN Bus Diagnostics

Frequently Asked Questions

How much does an alternator replacement cost in Sydney?

Do you offer emergency or same-day auto electrical service?

What areas do you serve near Sydney?

What qualifications does test have?

How do I get a free quote from test?

Why choose test over other auto electricians in Sydney?

How It Works

From first call to job done — hassle-free

Call or Book Online

Ring us or fill out a quick form. Tell us what's happening with your car. We ask the right questions to understand the fault.

We Diagnose the Fault

We come to you (or you come to our workshop) and run a proper diagnostic. No guessing—we find exactly what's wrong.

Transparent Quote

You get a free, upfront quote with no hidden costs. We explain what needs fixing and why. You decide to proceed or not.

Repair & Guarantee

We fix it properly and test everything. Your repair comes with a warranty. You drive away confident it's sorted.

Why Us

Why Sydney Drivers Choose test

Mobile Service to You

We come to your home or workplace—no need to lose a day driving to a workshop.

Transparent Pricing

Free quote, no hidden costs, and you know exactly what you're paying before we start work.

All Makes & Models

Japanese, European, American—we diagnose and repair every vehicle brand on the road.

Same-Day Service

Most jobs finished same day. Emergencies handled fast—battery, alternator, immobiliser faults sorted quickly.

Qualifications & Credentials

licence

Auto Electrician Licence

Licensed & Registered auto electrician in NSW

insurance

Public Liability Insurance

Fully Insured

association

NECA Member

National Electrical & Communications Association

accreditation

AS/NZS 3000 Compliant

Electrical safety standards certified

Don’t wait

Get your free quote today

Get Your Free Quote

Areas We Serve

test provides auto electrical repairs across Greater Sydney. Mobile service means we come to your home, workplace, or roadside.

Sydney

Parramatta

Penrith

Bankstown

Campbelltown

Hornsby

Manly

Newtown

Ready to Fix Your Electrical Fault?

Get a free, no-obligation quote from test. Tell us what's happening with your car, and we'll give you honest advice and transparent pricing.

SYDNEY, NSW 1001