About Our Harnesses

About Our Harnesses

Made In Britain

Here at Autosparks we are proud to say that we make all our harnesses at our dedicated manufacturing facilities in the East Midlands, England.

It’s true to say that even today British manufacturers are still admired for creating the highest quality products. It is a reputation this country has held for centuries and we are acutely aware that we are part of the latest generation of businesses charged with ensuring this enviable status is maintained.

Using a mixture of traditional techniques and modern machinery, each year our craftsman produces over 50,000 wiring harnesses, which not only go to buyers in the UK but to customers across the world.

If you have a requirement for wiring harnesses, please do not hesitate to contact us via the button below.

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Our Wiring Harnesses In-depth

Our wiring harnesses are manufactured in a variety of finishes. We use British Standard 6862 PVC insulated automotive cable where applicable. This can then be braided to replicate the classic braided cable look with the modern day PVC cable properties. Once the harnesses are laid they can then be bound in either PVC harness tape or a cloth braiding depending on vehicle.

Original Manufacturers colour coding is used where possible; terminals and fittings are supplied where necessary. We go to great lengths to obtain original-type terminals but on older vehicles some wiring accessories may no longer be manufactured. If terminals and fittings are unobtainable we may omit or substitute for a suitable alternative.

A few patterns are not complete and we may only be able to supply a main harness, we do state this where possible. Some smaller harnesses and sundry items are sold separately, please check before ordering. If in doubt contact us.

The new harnesses are not labelled but will follow the pattern of an original harness. A good tip is to label the old harness up as you take it off. You can then use this as a guide for the replacement. Wiring diagrams are useful to identifying each branch on the harness and location for the wiring in each vehicle however, be aware there can be a few out there for the same vehicle but will say different things. We do not supply a wiring diagram but online we do offer the British Standard Colour code.

Whilst we try to keep as many harnesses as possible in stock some may have to be built. This can be up to 10 weeks from receipt of payment.

Harness Finishes

The finishes of our harnesses are authentic to the original, as they are a like for like replicas.

Early wiring harnesses from the 1930’s onwards would typically have braided inner cables and an outer braided cloth finish, with the introduction of PVC cables in the late 1950’s we saw harnesses being produced with a mixture of both braided and PVC cables and the introduction of Vinyl taped outer covering.

By the 1970’s the majority of harnesses were constructed with all PVC cables and a taped outer.

Throughout our wiring harness range, you will notice that we specify what finish a harness is, such as 'Braided Cables with a Braided Outer Covering'.

You can see an overview of the different types of finishes we use below.

Inner Finish

Braided Cable (B)

Braided Cable

PVC Cable (P)

PVC Cable

Mixed Cable (X)

Mixed Cable

Outer Finish

Braided (B)


Taped (P)


Mixture (X)


Fitting Instructions

We don’t supply fitting instructions for our harnesses, they are like for like replicas for the original. We always recommend carefully labelling your original harness when removing and taking photos to use as a guide, also as an alternative you may wish to cut the original harness out but leaving the last couple inches of the terminated cable ends in situ as a guide to the exact position of the new connections.