P&B Group Auto Electrical, Mechanical, Auto AirP&B Group Auto Electrical, Mechanical, Auto AirP&B Group Auto Electrical, Mechanical, Auto Air
Heavy and Light Mechanical, Auto Electrical, Auto Air Conditioning, Refrigeration, and Automation Specialists
Two workshops in Frankton, Hamilton. Servicing Waikato and central North Island

Auto electrical diagnostics and repairs, and air conditioning services

For auto electrical diagnostics and repairs, and air conditioning services for cars, trucks, machinery and commercial vehicles, talk to P & B Group first. Our experienced team works across petrol, diesel, hybrid, electric and emerging hydrogen vehicle technology, with the capability to diagnose and repair everything from straightforward electrical faults through to more complex commercial and custom vehicle systems.
One of the key advantages of working with P & B Group is having mechanical and auto electrical capability together. That means faults can often be diagnosed, repaired and managed more efficiently without needing to move vehicles.
Whether you need electrical diagnostics, air conditioning repairs, custom vehicle fit-outs or commercial system installations, contact us to have a chat about your requirements.

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Experienced auto electrical and air conditioning team

  • Auto electrical diagnostics and repairs for vehicles and machinery
  • Auto air conditioning and refrigeration repairs
  • Custom electrical fit-out solutions
Workshop location: 20 Woodward Street, Frankton, Hamilton

Auto electrical diagnostics and repairs

Modern vehicles rely heavily on electronic systems, sensors and onboard computers, making accurate diagnostics an important part of identifying faults and repair requirements. P & B Group uses scan tools, diagnostic equipment and practical workshop experience to identify electrical faults and system issues across a wide range of vehicles and machinery.
Our team can diagnose dash warning lights, and repair electrical faults, charging systems, lighting faults and general auto electrical issues. We can work with advanced vehicle electronics including CANbus systems, ECU diagnostics and programming for a wide range of modern vehicles and machinery. We also carry out battery testing and replacement, alternator repairs, starter motor repairs and electrical maintenance work.
Because our mechanical and auto electrical teams work closely together, we can also support electrical fault diagnosis and repair work as part of our wider breakdown and urgent repair services where required.

Vehicle accessories, fit-outs and custom electrical systems

Alongside diagnostics and repairs, P & B Group installs a wide range of auto electrical accessories and custom vehicle systems for both light and heavy vehicles.
This can include reversing cameras, radios and communication systems, handbrake alarms, lighting systems, inverters, additional batteries and custom power systems for campervans, trucks and commercial vehicles. We also design and build custom vehicle electrical systems for new builds and specialised fit-outs based on customer requirements, including operational and safety-related systems.
Whether the job is a straightforward accessory installation or a more complex commercial vehicle fit-out, our team can provide practical solutions tailored to how the vehicle will be used day to day.

Air conditioning and refrigeration systems

P & B Group provides air conditioning and refrigeration services for vehicles, trucks, machinery and commercial equipment. This includes diagnostics, repairs, servicing, leak testing, refrigerant pressure checks and regassing for a wide range of systems.
We work on vehicle cabin air conditioning systems for cars, trucks and machinery, helping diagnose issues such as poor cooling performance, airflow problems, electrical faults, compressor issues and refrigerant leaks. Services can include air conditioning servicing, regassing, leak detection, component replacement, electrical repairs and cabin filter replacement.
Our team also works on refrigeration systems used in commercial vehicles, transport equipment and specialised vehicle setups. This can include fault finding, repairs, servicing and ongoing maintenance for refrigeration and cooling systems used in commercial applications. Refrigerant handling work is carried out by certified staff and contractors in accordance with current industry requirements. Regular servicing can also help identify small issues before they develop into larger and more expensive repairs.

Interlock systems and EROAD installations

P & B Group installs alcohol interlock systems for both light and heavy vehicles, working alongside Smart Start as the system supplier.
We also install EROAD units and associated systems for commercial operators, including tracking systems, fatigue monitoring and camera systems. Customers can supply their preferred EROAD equipment, with our team handling installation and setup requirements.
P & B Group supports everything from small electrical repairs through to larger commercial and plant maintenance work, with experienced technicians able to work across a broad range of vehicle and machinery systems. We have a dedicated onsite auto-electrical manager who coordinates repairs and day to day work. Give us a call to have a chat about your requirements.

Frequently Asked Questions for Auto Electrical

Mechanical faults usually involve physical components such as brakes, suspension or engine parts, while auto electrical faults relate to wiring, sensors, batteries, charging systems, ECUs and electronic vehicle systems. Modern vehicles often involve both, which is why having mechanical and auto electrical capability together can make diagnostics and repairs more efficient.

Intermittent faults are often caused by loose wiring, damaged connectors, moisture, vibration, heat or communication issues between electronic systems. These faults can be difficult to trace because the problem may not occur consistently while the vehicle is being tested.

Yes. Modern vehicles are much more electronically integrated than older vehicles, so accessories such as lights, cameras, batteries, inverters and communication systems need to be installed correctly to avoid problems with power supply, CANbus communication or vehicle electronics.

CANbus is the communication network that lets different electronic systems in a vehicle talk to each other. When there is a CANbus fault, the issue may show up as warning lights, intermittent faults or systems not working as they should, so careful testing and experience are needed to trace the cause.

Poor cooling can be caused by low refrigerant, leaks, compressor issues, blocked filters, electrical faults or airflow problems. A proper air conditioning check looks for the cause of the fault rather than simply regassing the system and hoping the problem is fixed.
P & B Auto Electrical
20 Woodward Street, Frankton, Waikato 3204, New Zealand
Business Hours
Monday - Friday: 7:30AM - 5:30PM
Saturday: 8:00AM - 12:00PM | Sunday: Closed
P & B Mechanical
289 Kahikatea Drive, Frankton, Hamilton 3204, New Zealand
Business Hours
Monday - Friday: 7:30AM - 5:00PM
Saturday: 7:00AM - 12:00PM | Sunday: Closed
Contact Number
Heavy and Light Mechanical, Auto Electrical, Auto Air Conditioning, Refrigeration, and Automation Specialists
Two workshops in Frankton, Hamilton. Servicing Waikato and central North Island