Technical Definitions

Technical Information

Have a Technical Query?

We have collected the most commonly asked technical details about our wiring harnesses below.

If you can't find an answer below please check our Frequently Asked Questions or contact us and we will be happy to help.

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Harness Finish

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.

Finish Code

Throughout our wiring harness range, you will notice that we assign a two-letter finish code to them. The first letter refers to the ‘Inner Finish’ of the cables, the second letter refers to the ‘Outer Finish’ of the harness covering.

If a harness had the finish PP it would have an inner finish of PVC cables with an outer finish of Tape. 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.