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Classic Car electrical faults

Classic Car Electrical Diagnosis & Repair

Bring Your Classic Back to Life, safely and reliably. 

At TVE Chard, we specialise in diagnosing and repairing electrical faults in classic cars. Whether you’re maintaining a cherished personal project or need expert support for a professional restoration, our experienced auto electricians are here to help.

We understand how important your classic car is — not just in value, but in meaning. Whether it’s a decades-old dream car or a piece of family history, your vehicle will be treated with the care and respect it deserves. From the moment it arrives at our workshop, we ensure it is safely stored, handled with precision, and worked on as if it were our own.

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01460 64255

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50+

Years of Experience

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What We Offer

Electrical Fault Diagnosis & Repair

We tackle a wide range of classic car electrical faults, including:

Corroded Wiring & Terminals

  • Caused by age and moisture, or previous poor repairs.
  • Leads to poor conductivity, intermittent faults, and voltage drops.
  • We clean or replace corroded connectors and rewire damaged sections.

Brittle, Cracked, or Frayed Wires

  • Common in older looms due to heat and aging insulation.
  • Risks shorts, blown fuses, and electrical fires.
  • We replace compromised wires using high-quality, period-appropriate materials.

Poor Ground Connections

  • A frequent cause of flickering lights, strange gauge readings, and intermittent failures.
  • We inspect, clean, and reinforce all grounding points for reliable performance.

Battery Drain 

  • Drains your battery even when the car is off.
  • Often caused by faulty clocks, switches, or hidden aftermarket wiring.
  • We use advanced diagnostic tools to locate and fix battery drains

Overheating Wires or Burned Fuse Boxes

  • Indicates overloaded or poorly protected circuits.
  • Can lead to melted wires or fire risks.
  • We replace fuse boxes, install proper fusing, and reroute overloaded circuits.

Faulty Switches & Connectors

  • Common in ignition, lighting, and heater controls.
  • Often due to corrosion or mechanical failure.
  • We refurbish or replace switches with OEM or high-quality alternatives.

 Lighting Circuit Faults

  • Dimming headlights, indicators not flashing, or brake lights staying on.
  • Usually caused by bad earths, failing relays, or corroded bulb holders.
  • We restore proper function and upgrade to modern relays where needed.

Full or Partial Rewiring

  • Complete rewire using modern, safe materials
  • Replacement of damaged or corroded wiring
  • Custom harness fabrication and fitting
  • OEM-style or discreet modern upgrades

Charging & Starting System Repairs

  • Alternator and voltage regulator testing5
  • Starter motor replacement and wiring
  • Ignition switch and circuit troubleshooting

Lighting & Accessory Fixes

  • Headlight conversions with relays
  • Dashboard & instrument lighting repairs
  • Fuse box upgrades (modern blade fuses)

We Work On:

  • MG
  • Jaguar
  • Triumph
  • Mini
  • VW
  • Porsche
  • Audi
  • Land Rover
  • Range Rover
  • Austin-Healey
  • Aston Martin
  • and more…

Why Choose TVE Chard?

  •  Classic Car Specialists – We understand the unique challenges of older electrical systems.
  • Accurate Diagnostics – We combine traditional techniques with modern tools.
  • Quality Craftsmanship – All wiring is routed properly, secure, and built to last.
  • We Treat Your Car with Respect – Stored indoors, covered when needed, and worked on with care and pride.
  • Trusted by Restoration Garages – We proudly complete electrical work for classic car restoration businesses across the region.

 Contact us Today to discuss your requirements and make your classic safe and reliable. 

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Book now using our online booking or if you have a more complex requirement then please do not hesitate to contact us

01460 64255
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Have a Questions? Call Today!

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01460 64255

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Advanced Diagnostics, dealer software and technical information, genuine or high-quality parts, ongoing training and customer service. Why go anywhere else!
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Opening Hours

  • Monday - Thursday: 8.00am - 5.30pm
  • Friday: 8.00am - 5.00pm
  • Saturday: 8.30am - 12.00pm
  • **Closed Bank Holiday Weekends**

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