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Authorized Suzhou distributor · Xinya Electronic Co., Ltd. 📞 +86 15862457677 📫 [email protected]
Xinya AWM Wire Authorized Suzhou distributor · Xinya Electronic Co., Ltd.

Automotive Wire Harness Manufacturer | Custom Loom

Custom automotive wiring harnesses and looms built to OEM drawing: sealed connectors, tinned copper, vibration-rated crimps and colour-coded circuits.

Automotive wiring harness with taped loom and multi-pin connectors
Made to drawing. No prices are published and there is no cart. Send the drawing, a sample or a list of from-to points and we will quote the wire, connector, crimp and test method in writing.

Automotive Wire Harness: what we build

Vehicle looms fail at the termination long before they fail in the conductor, which is why so much of the work here happens at the crimp. Terminals are matched to the connector series they belong to, crimped with the applicator that series was designed for, and pull-tested before the loom is closed.

The under-bonnet and cabin routes inside one vehicle want different wire. Engine-bay branches run hot and see oil, so they take XLPE or a 105 °C PVC style; cabin and boot runs sit in a cooler, drier environment where a 300 V PVC hook-up wire is the economical answer. We split the bill of materials by route rather than defaulting the whole loom to one style.

Branches, splices and grounds are built to your drawing, with the loom dimensions called out to the fixing points so it lands in the shell without being pulled into place.

How we build it

  • Sealed and unsealed connector systems crimped with series-matched tooling
  • Branch points, mid-loom splices and ground studs built into the assembly
  • Colour coding and printed circuit numbers to your chart
  • Sleeving, conduit and tape wrap specified per route: engine bay, cabin, chassis
  • Continuity, short-to-ground and pull-test inspection on every assembly
  • Conductive paths and shield drain terminations handled where the loom needs them

Wire we build this harness on

Every conductor is Xinya wire from this site's own catalogue, so the style inside the harness can be traced to a published data sheet. These are the lines most often specified for this application:

If your drawing names a style that is not listed here, ask — the catalogue published on this site is a subset of what the factory runs, and we can quote against a style number as easily as against a description.

How to get a quotation

Send the drawing, the sample, a photograph with a scale in shot, or a table of from-to points. Our reply names the wire style, the connector series, the crimp specification, the sleeving and the test method, so your engineers can approve the part rather than interpret a description. Nothing on this site carries a price: every harness is quoted against the specification you provide.

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Questions buyers ask about automotive wire harness

Can you build a loom from a sample rather than a drawing?

Yes, and it is common for aftermarket and restoration work. Send the old loom or clear photographs with dimensions to the fixing points, and we will rebuild to those measurements and confirm the connector series in writing before production.

Which wire is right for an engine-bay branch?

Route temperature decides it. A 105 °C PVC style such as UL1015 covers most engine-bay work at 600 V. Where the branch runs close to the manifold or turbo, UL3266 XLPE at 125 °C gives headroom that PVC cannot. Both are in this catalogue with their temperature ratings published.

Do you supply tinned copper for damp routes?

Yes. Tinned conductor is the default recommendation for chassis, wheel-arch and marine-adjacent runs because it resists the corrosion that attacks bare copper at a damaged strand.

Are the crimps tool-controlled?

Terminals are crimped with applicator tooling matched to the terminal series, not with a generic plier. Crimp height is verified and the pull-test result is recorded against the lot.

What is a typical lead time?

Prototype sets usually move faster than production because no tooling is committed. Give us the quantity and the drawing and we will put a date against it in the quotation rather than after the order.

Other Automotive & Transport harnesses

Request a quotation for this harness

Tell us the style, AWG, colour and quantity — or attach nothing and just describe the requirement. We reply to every enquiry.

We use your details only to answer this enquiry. No prices are published on this site.

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Questions & answers

Frequently asked questions

Certifications, lead time, payment, shipping and MOQ — the points buyers ask about most often. If something is still unclear, send us your requirement and we will answer directly. See the full FAQ →

01 Are you a manufacturer or a trading company?

We are a wire harness manufacturer — cutting, stripping, crimping, sealing and testing are all carried out in-house at our Suzhou plant. We are also an authorised distributor of Xinya brand electronic wire, so you can source both the wire and the finished harness from one supplier.

02 What certifications do your electronic wires have?

Our electronic wires carry UL, VDE, PSE and CE approvals, together with RoHS and REACH compliance for the European market; TUV approvals are available for PV and renewable-energy wire. Certificates and test reports are issued by the manufacturer and can be supplied with your quotation on request.

03 How long is the lead time?

For electronic wire, popular styles such as UL1007, UL1015, UL1061 and UL1569 are normally available quickly; other styles, non-standard colours and cut lengths usually take around 7 days. Wire harnesses are made to order, so the schedule depends on your drawing, connector availability and quantity — we confirm it in the quotation.

04 What are your payment terms?

We commonly accept T/T (telegraphic transfer), PayPal and Western Union. Typically a 30% deposit is required before production, with the balance paid before shipment.

05 How do you ship the goods?

Samples and small orders are shipped by international express (DHL, FedEx, UPS, TNT) or by air freight. Larger orders normally go by sea to reduce freight cost. We can quote EXW, FOB, CIF or door-to-door terms and will recommend the option that best fits your budget and delivery date.

06 Do you have a minimum order quantity (MOQ)?

We keep a low MOQ to support your business. Generally the MOQ is 1 piece for standard models, although it may vary slightly for customised products. Small trial orders are welcome.

07 Can you build harnesses to our own drawing or sample?

Yes. We build to print and build to sample — send us a 2D drawing, a BOM, connector part numbers or even a photo of the part in use, and we will assemble, test and quote accordingly.

08 Can I get a sample before placing a bulk order?

Yes. We are happy to build a prototype first so that you can approve the fit, crimp and finish before committing to volume. Send the drawing and the target quantity and we will quote sample cost and lead time.

09 What information do you need to give a quotation?

For wire: the style or UL number, AWG, voltage and temperature rating, insulation, conductor, colour and length. For harnesses: the drawing or BOM, connector brand and part number, terminal and housing type, wire specification, cut length and tolerance, sleeving or tubing, label and packaging requirements, quantity and destination. If anything is unclear we will ask — or propose a construction for you.

10 Do you support OEM / ODM and private labelling?

Yes. We work with customer-specified connectors and brands as well as JST, Molex and HongXing, and can add printed markers, custom labels, printed bags and your own carton artwork for OEM and ODM projects.

11 How do you control quality?

Every order goes through incoming wire inspection, cutting and stripping checks, crimp height and terminal pull-force testing, 100% continuity and open-and-short testing, and a final dimensional and visual inspection. Inspection records can be supplied with the shipment when your project requires them.

12 Can you help with wire and connector selection?

Yes — our engineers help match wire gauge, insulation and temperature rating to your current, voltage and working environment, and select a terminal and housing combination that crimps reliably. Describe the application or send a sample and we will propose a construction.

13 Can you supply cut lengths and custom packaging?

Yes. Wire can be supplied in cut lengths, coils or spools, with PE bags, cartons, pallets and printed labels arranged to suit your warehouse or production line.

14 Do you ship worldwide, and can I visit the factory?

We ship worldwide, with regular shipments to Europe, North America, South-East Asia, the Middle East and Australia. You are welcome to visit our plant in Suzhou, and you can see our production lines in the factory videos on this site.

15 What happens if there is a quality problem after delivery?

Contact us with the order or batch number and photos of the issue. We will check it against our production and inspection records and, where the fault is confirmed on our side, arrange replacement or credit.

Send us your requirement See our production lines

Need wire to a specification?

Send the style, AWG range, colour and length — or your BOM and drawing. We will come back with construction, availability and lead time. This catalogue publishes no prices; every enquiry is quoted directly.

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