Full-Category Custom Harness OEM/ODM

Full-Category Custom Wire Harnesses, Engineered in Shenzhen

RONGAI covers the full range of automotive aftermarket harness categories — head unit, audio, device power, board-level, lighting and power protection — all built to your drawings in one Shenzhen factory. TPMS systems run under the same roof.

Division 01

Wire Harness & Cable Assembly

Custom automotive and motorcycle harnesses, from prototype to volume production.

Full category range: head unit, audio, USB, board-level, lighting, power
Built to your drawing, spec sheet or physical sample
In-house cutting, crimping, soldering and overmolding

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Division 02

TPMS — Tire Pressure Monitoring

Display systems, sensors and complete kits for passenger cars and commercial fleets.

Android display & BLE smart sensors
Solar wireless kits, CAN-BUS systems
White-label ready or custom R&D

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TPMS Division

Six Product Lines, One TPMS Team

Pick a ready configuration or bring your own platform — the same engineering team supports both. Strong R&D is our sharpest edge: protocol adaptation, app customization and OEM-level co-development.

LINE 01

Android Display TPMS

Pressure data shown right on the Android head unit's factory-style dashboard UI.

Protocol adaptation to your head unit
4-wheel real-time monitoring

LINE 02

CAN-BUS Commercial Vehicle TPMS

For trucks, trailers and fleets that need data integrated into the vehicle CAN network.

CAN-BUS integration
Trailer & multi-axle setups

LINE 03

Solar Wireless TPMS

Stand-alone display with solar charging — no wiring, retail-ready, quick to install.

Solar + USB dual power
Strong seller in retail & e-commerce

LINE 04

Bluetooth Smart TPMS

BLE sensors pair with a phone app — light, affordable, easy to brand as your own.

Car and motorcycle versions
App customization for your brand

LINE 05

Universal Programmable Sensors

One sensor, many vehicles — programmed on the bench or by the installer.

Covers mixed vehicle fleets
Programmer tool support

LINE 06

GPS Tracking + Axle-Temperature

Location plus axle-temperature monitoring in one platform — built for fleet operators.

GPS positioning platform
Fleet management dashboard

Application Know-how

We Know the Whole Head Unit, Not Just the Plug

Designing a harness for an Android head unit means getting every branch right: main power (ACC / battery / GND), illumination and key control, speaker outputs, RCA audio branches, 4-pin and 6-pin USB, GPS and Wi-Fi antennas, reversing trigger and amplifier control.

See How We Customize

Complete Android head unit wiring connection diagram showing power, RCA, USB and antenna connections

Why RONGAI

A Factory Built Around Cable Assembly

Cutting, crimping, soldering, overmolding and final assembly all happen on our own floor in Shenzhen.

RONGAI cable assembly production floor with assembly lines

Own Production Lines

Dedicated assembly lines for harness building, bundling, taping and 100% visual and function checks before packing.

Injection molding machines for connector overmolding

In-house Injection Molding

Vertical injection machines handle connector overmolding and strain relief, which keeps look, fit and lead time under our control.

Managed Supply Chain

Wire and connector suppliers are qualified and held to spec. UL-recognized wire and RoHS-compliant materials arrive with documentation that passes through to your order.

OEM / ODM Process

From Your Drawing to Shipment, in Clear Steps

A simple, controlled flow, with written sign-off at the one gate that matters most.

Send Drawing or Sample

Share your drawing, spec sheet or a physical sample. We review feasibility and quote.

Quotation

Clear pricing by spec: wire gauge, connector family, length, labeling and packaging.

Sample & Approval

Pre-production samples for your written approval before any mass production starts.

Mass Production

Production starts only after your sample approval, with in-process and final inspection.

Packing & Delivery

Packed to your requirement and shipped on the trade terms agreed in the contract.

Materials & compliance: UL-recognized wire and RoHS-compliant materials are available on request. Material certifications are supplied with the relevant orders. Factory system certification is not claimed on this site.

Who Buys From Us

Built for Four Buyer Types

Different divisions, same buyer profiles — if you source one, the other is probably on your BOM too.

Tier-1 & OEM buyers

Drawing-based harness sourcing; CAN-BUS TPMS for platform builds.

Brand owners

White-label TPMS with your APP and packaging; private-tooling harnesses.

Aftermarket distributors

Universal sensors, solar kits, retail-ready harness sets in volume.

Modification & fleet channels

Fast-turn custom assemblies and fleet TPMS with fleet management APP.

Common Questions

Frequently Asked

Are you a factory or a trading company?

We are the factory. Cutting, crimping, soldering, injection overmolding, assembly and inspection all run on our own floor in Shenzhen, and our sourcing team manages the wire and connector supply chain behind every build.

Do you manufacture from our drawings or samples?

Yes. Send a drawing, spec sheet or a physical sample — we build to your specification. Pre-production samples are made with final materials and connectors, and mass production starts only after your written sample approval.

What are your typical lead times?

Sample lead time: 7–12 working days. Mass production lead time depends on harness complexity, BOM availability and order volume; we will confirm the schedule in your quotation.

Can you support small sample orders?

Yes, sample & prototype orders are available for validation before mass production.

What is your minimum order quantity (MOQ)?

We're flexible. Low-volume custom projects and repeat mass production run on the same floor. MOQ is discussed per project at the quotation stage.

What are the payment terms?

T/T 50/50: 50% deposit, 50% balance before shipment.

How do I get a quote?

Send your drawing, sample photos, target quantity and destination market through the inquiry form. We reply within one business day with feasibility feedback and pricing.

See all FAQs →