Please see our harness finder guide

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Our harnesses do not come with battery cables. Where we have the specification for these, they will appear in the listing for your vehicle. We will always offer them as an option rather than including them. If we do not list them, then all parts are available in the Electrical Components section of our website.

A Pre-Engaged starter motor will make the existing starter Solenoid redundant. In most instances this is where the wiring harness picks up power from the battery.

What does this mean for the modified harness?

The battery pick up is now on the actual starter motor, so we need to extend the old Solenoid position (on the harness) to the starter motor. We need the additional length taking into consideration routing through the engine bay i.e. the distance from the old solenoid to the new starter motor. 

All harnesses for English vehicles are manufactured using the British Standard Colour Code which was used by the manufacturer at the time. For a full list click here

Standard Colour Abbreviations

B	Black
G	Green
K	Pink
N	Brown
O	Orange
P	Purple
R	Red
S	Slate
U	Blue
W	White
Y	Yellow
LG	Light Green

PVC Taped harnesses can easily be re-covered by the owner. Harness tape is available in the Electrical Components section of our website.

Re-covering a braided harness is something that has to be done via our in-house braiding service, and we can braid your original or custom harness. The cost is £3.50 per foot plus return carriage & VAT.

We endeavour to turn these jobs around as soon as possible.

Please note: We cannot braid single wires.

If you would like any more information on this service please visit our harness rebraiding page

If you need a harness for a vehicle but we've never seen a pattern for it we may be able to replicate your original harness, in this case please visit our harness replication page for more information.

If you need to return a product, please contact us first to discuss it. If you then choose to send the products back please print, complete and include our returns form here

Yes, we have a range of kit car wiring harnesses, further information can be found here.

We only manufacture and distribute our harnesses to customers, we do not fit them.

Click here to see our delivery charge information

On most vehicles the harness ends short of the headlamps, and headlamp pigtails connect the harness to the headlamps themselves. As headlamps are sometimes supplied with these, and in other cases customers do not wish to replace them, we offer them a separate item within our Electrical Components section.

We have been questioned in the past as to why we use 9 strand cable when it was never used originally. This was because in the old days Lucas manufactured two sizes of 14 strand cable. 14/0.10 (14/0.25mm) and 14/0.12 cable. (14/0.30mm). As all of the larger sizes of cables had a strand size of 0.12 (0.30mm), Lucas rationalised their manufacturing and replaced the odd 14/0.10 cable with 9/0.12 (9/0.30mm) giving an equal carrying capacity.

Generally a harness will go all the way to the rear lights and connect to either the lamp itself, or to wires that are attached to the lamp. Traditionally the harness at the front end would end with bullet connectors inboard of the headlamps. This would then need headlamp leads, usually around three feet long, to go out to the lamps themselves. We can supply these as separate parts if required. Please see our Electrical Components section of the website.

Our general rule is to fit any bullet connecting sleeves larger than a single one. This removes the question of which wires to fit in which connector at certain points. Single connectors, and any extra larger ones, are available in our Electrical Components section of the website.

Due to the unavailability of many of the original metal bulbholders, plastic replacements are fitted which take a modern capless bulb. A large range of bulbs can be found in our Electrical Components section.

The common replacements that we use are:

Replacement holders for a BA7S 12V 2W panel & warning light bulb take a 12V 1.2W capless bulb which can be found here

Replacement holders for a 12V 2.2W panel bulb take a 12V 3W capless bulb which can be found here

Diagrams for all of the modifications available as options on the website are available here 

This is the conversion from Rolls Royce wire sizes

Rolls Royce Size	Strand
23/36	14 strand
40/36	28 strand
90/36	44 strand

This is the conversion chart for American Wire gauge (AWG) sizes

AWG	Strand
19	9
17	14
14	28
12	44
10	65
9	84
8	97
8	120

Inches	1/8"	3/16"	1/4"	5/16"	3/8"	1/2"	5/8"
Millimetres	4mm	5mm	6mm	8mm	10mm	12mm	16mm

PVC & Braided Cable

Size	Cross Section	Nominal O/D	Carrying Capacity	General Use
9/0.3	0.65mm2	2.35mm	5.75 Amps	LT Ignition Side & Tail Lamps  General Wiring
14/0.3	1.0mm2	2.55mm	8.75 Amps
28/0.3	2.0mm2	3.15mm	17 Amps	Headlamps Major Accessory Feeds
44/0.3	3.0mm2	3.95mm	25 Amps	Dynamo Control Box Ammeter
65/0.3	4.5mm2	4.85mm	35 Amps	Alternator Feed Ammeter
84/0.3	6.0mm2	5.7mm	42 Amps
120/0.3	8.5mm2	6.8mm	60 Amps

Thin Wall Cable

Size	Cross Section	Nominal O/D	Carrying Capacity
16/0.2	0.50mm2	1.7mm	11 Amps
24/0.2	0.75mm2	1.9mm	14 Amps
32/0.2	1.00mm2	2.1mm	16.5 Amps
28/0.3	2.00mm2	2.7mm	25 Amps
44/0.3	3.00mm2	3.4mm	33 Amps
65/0.3	4.5mm2	4.1mm	42 Amps
84/0.3	6.00mm2	4.3mm	50 Amps
120/0.3	8.50mm2	5.6mm	63 Amps
80/0.4	10.00mm2	6.0mm	70 Amps