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Simms Electrical

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Simms Electrical

Best automotive electrical fit out and repair service in Auckland. An iconic trusted NZ business. Call or pop in today! Heavy Auto Electrical experts.

Your one-stop auto electrical shop in Auckland. Car or truck not performing as it should? Need parts, repair, or servicing? Welcome to Simms Auto Electrical. Specialising in all things automotive electrical, we only stock the very best brands for guaranteed high quality every time. Large show room stocking alarms, vehicle lighting, Cameras, horns, fuses switches we got it all. We are also a Battery Town store, we can supply all kinds of batteries and battery master switches. As your one-stop auto electrical shop we can also diagnose different types of vehicles, using the latest diagnostic equipment and techniques. with a fleet of service vans we can also attend anywhere in Auckland and surrounds.

02/11/2026

When one truck is off the road, the impact quickly spreads across the whole operation. Fleet telematics gives operators clearer visibility of vehicle location, performance and warning signs, helping prevent avoidable breakdowns and keep jobs moving. With the right technology and dependable support from Simms Electrical, fleet managers can make faster decisions and stay ahead of maintenance issues. It’s a practical look at how smarter monitoring can protect uptime and reduce downtime.

https://simmselectrical.co.nz/fleet-telematics

31/10/2026

A truck breakdown can put an entire operation on hold, but the right response makes all the difference. In this case, Simms Electrical diagnosed the fault, carried out the repair and had the vehicle back on the road in just 90 minutes. It’s a practical look at how mobile service, specialist knowledge and the right diagnostic equipment help keep commercial vehicles moving.

https://simmselectrical.co.nz/truck-breakdown-case-study

29/10/2026

A failed alternator can bring a car, truck or trailer to a standstill, but it doesn’t always mean a trip to the workshop. Mobile auto electricians can diagnose the fault on-site and replace the alternator where the vehicle is parked, helping minimise downtime for motorists and businesses. Knowing when a mobile replacement is suitable—and what the job involves—can save time, avoid unnecessary towing and get you back on the road sooner.

https://simmselectrical.co.nz/can-mobile-auto-electricians-replace-alternators

27/10/2026

Thinking about adding a second battery to your vehicle? The right setup depends on how you use your vehicle, from powering work gear and accessories to keeping essential systems running without risking a flat starting battery. Our guide breaks down the practical differences between dual and single battery systems, so you can choose a reliable setup for your vehicle and the work it needs to do.

https://simmselectrical.co.nz/dual-battery-versus-single-battery

25/10/2026

Flickering trailer lights aren’t just frustrating—they can point to a fault that compromises safety and delays the job. This practical guide covers the common causes, from poor earths and damaged wiring to faulty plugs and connectors, and how to narrow down the problem quickly. Find out what to check first and when it’s time to call in a specialist.

https://simmselectrical.co.nz/trailer-lights-flickering

23/10/2026

Truck electrical faults can bring a vehicle, fleet or delivery schedule to a standstill. Our guide covers the key electrical parts that support reliable uptime, from batteries and starters to alternators, lighting and diagnostic systems. It’s practical guidance for choosing dependable components and keeping heavy vehicles working when downtime isn’t an option.

https://simmselectrical.co.nz/truck-electrical-parts-guide

21/10/2026

A flat battery is not always a battery problem—parasitic drain can quietly pull power from your vehicle while it’s parked. Our guide explains how to identify the source, test the electrical system safely and avoid unnecessary parts replacement. It’s a practical starting point for vehicle owners, fleet managers and operators who need to minimise downtime and keep vehicles ready for work.

https://simmselectrical.co.nz/how-to-locate-parasitic-drain

19/10/2026

Choosing between a lithium and AGM battery isn’t just about price—it depends on your vehicle, power demands and how hard it works. We break down the key differences, including performance, lifespan, charging needs and where each battery type makes sense for everyday drivers and commercial operators. Get the right information before replacing a battery and avoid costly downtime.

https://simmselectrical.co.nz/lithium-versus-agm-batteries

17/10/2026

Poor trailer lighting isn’t just a visibility issue—it can create serious safety risks and costly downtime. The right upgrades, from brighter LED lamps to better wiring and compliance checks, help keep your trailer visible and road-ready in all conditions. This practical guide covers the most worthwhile lighting improvements for safer towing, whether you’re managing a fleet or hauling gear on the weekend.

https://simmselectrical.co.nz/best-trailer-lighting-upgrades

15/10/2026

Keeping a commercial fleet secure means protecting vehicles, tools and valuable time. Our guide to the best commercial vehicle alarms in Auckland covers practical options for trucks, vans, trailers and work vehicles, with a focus on reliable coverage and minimal downtime. It also explains what fleet operators should look for when choosing alarm systems backed by dependable installation and support.

https://simmselectrical.co.nz/best-commercial-vehicle-alarms-auckland

Address

70 Princes Street
Auckland
1061

Opening Hours

Monday	7am - 5pm
Tuesday	7am - 5pm
Wednesday	7am - 5pm
Thursday	7am - 5pm
Friday	7am - 5pm
Saturday	7am - 12pm

Website

https://www.simmsautoelectrical.co.nz/

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