FAQ

There is a user guide for the finder here

There is a user guide here

There is a user guide here

There is a user guide here

Please note that our trade discount is only applied to wiring harnesses, our electrical components range is subject to a tiered pricing setup whereby the more units you buy, the cheaper the unit price. All of the price breaks for the tiered pricing are listed on each product's page on the website.

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.

PVC Taped Harnesses can easily be done by the Owner. Harness Tape is available in the Electrical Component section of our Website.

Recovering a Braided Harness is something that has to be done in-house and we offer a braiding service whereby we can braid your original or custom harness. The cost is £3.00 per foot plus return carriage & VAT.

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

To prepare your harness:

  • Remove all the old original braiding (if there is any)
  • Indicate where you would like the braid to start and finish, by using adhesive tape where the end of the braid is required.
  • Enclose a cover letter with your parcel with contact details
  • Advise if you would like a coloured fleck in your new braid. If you are unsure just advise what vehicle the wiring loom came off and we can check it against our patterns.
  • Once your harness is ready we will then contact you for payment details and a final cost.

Please note: We cannot braid single wires.

If you would like any more information on this service please contact sales@autosparks.co.uk

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 you need to contact us to discuss the matter, then, if we do need to see your original please download the form here and send it in along with the harness.

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 them selves. 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 criticised in the past for using 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