Buy Used Vauxhall Astra Electrical Systems and Other Car Parts

Used Vauxhall Astra Electrical Systems

All used Vauxhall Astra Electrical Systems listed on Breakeryard.com are tested, original (OEM) manufacturer parts and come with a 14 day money back guarantee. Breakeryard.com listed used car parts for Vauxhall Astra are from premium breaker yards from across the UK, saving you up to 80% compared to main dealer prices.

About Electrical Systems

Getting into the details of the electrical system

The electrical systems on most modern cars consist of negative earth circuits. The main power source is the 12 volt battery and when the engine is running, the alternator. The systems run off a positive flow with a negative earth return through the body of the vehicle. On some older vehicles the system is run on a positive earth, but this is mainly on 6 volt systems.

A set of wiring looms, which is all the cables bound together which run through the vehicle and branch of where power is needed for individual components. In addition there is a heavier cable running the main charging, ignition and the starter motor to supply the high voltage required to turn and start the engine and keep the battery charged. The wiring for all the circuits in the car are of different thickness and amperage depending on the components power requirements. The wires are colour coded to enable tracing wires when looking for a fault. On modern cars with electronic control devices and components, printed circuits are widely used as they take up less space than a bunch of wires. The power source for the electrical systems is switched on via the ignition key/switch apart from the lighting system which is on a live feed to enable the lights to be used for parking. This ensures that the battery will not be run down when the car is left unattended.

The power source runs through a fuse box and relays, which protects components from damage due to electrical short outs. Apart from the starter motor most components run on 5 amp. 10 amp, 15 amp, 20 amp, 25 amp and 30 amp wiring and are fused according to the power requirements being carried on each wire. Components are activated through the ignition, relays and switches and with remote controlled devices through electromagnetic switches.

What if something goes wrong with the electrical system?

The most common faults with the electrical system involve the lighting system of the vehicle requiring the replacement of blown bulbs. In the event of a malfunction of any component, the fuses should be checked in the fuse box, normally located in the front footwells or glove compartment. This box has a labelled colour coded fuse array and individual fuses can be visually checked to see if it has blown. This serves as a starting point to resolving electrical faults.

Vauxhall Astra trivia

  • The 2013 Astra used in the TV show Top Gear that was raced by celebrities went up for auction in 2019. After being driven by 22 celebrities, including Hugh Jackman, Benedict Cumberbatch, Will Smith, and Olly Murs (the fastest driver in the fun contest), the car sold for £6,000 despite not being roadworthy. There are claims that the Top Gear Astra has been seen by more people than any other car in the world, ever.
  • In 30 years of production, there had been 2.5 million Astras sold in the UK, which means that it ranks fourth in the most popular cars in Britain.
  • The Astra was originally built in Germany, but after the consolidation of Opel and Vauxhall dealerships in 1981, production of the Astra moved to Ellesmere Port in the UK.
  • The Astra GTE Quicksilver was a design exercise intended to coincide with the silver anniversary of the Ellesmere Port Factory in 1987.
  • In 1999, the Astra MK4 was awarded four stars in the Euro NCAP tests and is still considered one of the safest cars in the country.